There are so many variations of the Gibbs ascender in my collection that I list them in a number of separate tables, with closely-related versions grouped together, and then list the remainder in a longer table at the end. Here is a quick index to the tables on this page:

• Gibbs Ascenders
  1. 1/2" Spring-wire Gibbs
  2. 1/2" Quick-release Pin Gibbs
  3. 1/2-inch Spring-loaded Gibbs
  4. 5/8" Gibbs
  5. 3/4" Aluminum Shell Gibbs
  6. 3/4" Stainless Steel Shell Gibbs
  7. Bolted Gibbs
  8. Gibbs ASR
  9. Modified Gibbs
  10. Gibbs Quick
• Non-Gibbs Ascenders

A gray background in the weight column indicates a stainless steel shell, rust-brown indicates a steel shell, and orange indicates a titanium shell.

Gibbs Ascenders

(a) 1/2" Spring-wire Gibbs

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	128	Gibbs spring-wire, Versions A1 & A2	Stamped Al U-frame, cast cam, pin axle /w nylon keeper and retainer. One of the first 50 made.	NSS Auction, 1998	148	103	64	36	237
	2393	Gibbs spring-wire, Version B	Stamped Al U-frame, original cast cam, pin axle /w spring-wire keeper and retainer	Rick Banning, 2019	154	103	63	36	235
	61 3645	Gibbs spring-wire, Version C	Stamped Al U-frame, original cast cam, pin axle /w spring-wire keeper and retainer	Unknown, 1980s Collectibles from Maine / John Freund, 2024	152	103	64	36	237
	252 2248	Gibbs spring-wire, Version D	Stamped Al U-frame, original cast cam, pin axle /w spring-wire keeper and retainer	Bill Boehle, 2008 Bob Thrun Collection, 2017	153	103	64	36	237
	1521 1977	Gibbs spring-wire, Version E	Stamped Al U-frame, cast ribbed "racing" cam, pin axle /w spring-wire keeper and retainer	Myra Nicholas, 2009 David Jones, 2014	150	103	59	36	237
	62 1978 2343 3436 3499 3616	Gibbs spring-wire, Version F	Stamped Al U-frame, cast ribbed "racing" cam, pin axle /w spring-wire keeper and retainer	John E. Weinel, Inc., 1989 David Jones, 2014 Bill Liebman, 2017 William Shrewsbury, 2021 Michael S. McBride, 20221 Kim Fleischmann, 2023	155	104	59	37	227
	3550	Gibbs spring-wire, Version G	Stamped Al U-frame, cast ribbed "racing" cam, pin axle /w spring-wire keeper and retainer	Kelley Deem, 2022	154	103	71	36	263
	63 1548 2244	Gibbs spring-wire, Version H	Stamped Al U-frame, cast cam /w cord keeper, pin axle /w spring-wire keeper and retainer	Gibbs Products Inc., 1973 J. W. Jackson, 2011 Bob Thrun Collection, 2017	182	104	59	36	221

(b) 1/2" Quick-release Pin Gibbs

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	2344	Gibbs QR. Version A	Stamped Al U-frame, cast Al cam on cord keeper, QR pin axle on chain keepers	Bill Liebman, 2017	172	103	58	57	342
	209 224 2258 2395	Gibbs QR. Version B	Stamped Al U-frame, cast Al cam on cord keeper, QR pin axle on chain keepers	Thomas Kopp, 2007 Richard Briggs, 2007 Bob Thrun Collection, 2017	182	103	58	57	338
	65 286 1543 3554	Gibbs QR, Version C	Stamped Al U-frame, cast Al cam on web keeper, QR pin axle on chain keepers	Unknown, 1970s Henderson L. Holman IV, 2009 Phillip Harris, 2010 Kelley Deem, 2022	182	104	58	57	344
	1930	Gibbs QR, Version D	Stamped Al U-frame, cast Al cam on web keeper, QR pin axle on chain keepers	Barbara Anne Am Ende, 2012	180	104	58	57	344
	2047	Gibbs QR, Version E	Stamped Al U-frame, hard-coated cast Al cam on web keeper, QR pin axle on chain keeper	CarolJo Rushin-Elron, 2016	175	104	58	57	341
	2046	Gibbs QR, Version F	Stamped Al U-frame, hard-coated cast Al cam on web keeper, QR pin axle on chain keeper	Bob Thrun Collection, 2017	286	104	59	57	346
	2045	Gibbs QR, Version G	Stamped SS U-frame, hard-coated cast Al cam on web keeper, QR pin axle on chain keeper	CarolJo Rushin-Elron, 2016	289	103	58	57	340
	2042	Gibbs QR, Version H	Stamped Al U-frame, hard-coated cast Al cam on web keeper, QR pin axle on chain keeper	Bob Thrun Collection, 2017	179	104	59	57	346
	2046	Gibbs QR, Version I	Stamped Al U-frame, hard-coated cast Al cam on web keeper, QR pin axle on chain keeper	CarolJo Rushin-Elron, 2016	173	103	58	57	340
	1918	Gibbs QR, Version J	Stamped SS U-frame, hard-coated cast Al cam, QR pin axle on cable keeper, web cam keeper on teardrop	Speleoshoppe, 2012	284	103	59	57	345
	2317	Gibbs QR, Version K	Stamped SS U-frame, punched Al cam, QR pin axle on cable keeper on teardrop, web cam keeper	On Rope 1, 2017	313	104	71	63	461
	66 113	Gibbs QR, Version L	Stamped Al U-frame, hard-coated cast Al cam, QR pin axle on cable keeper	Unknown Geary Schindel, 1992	178	104	60	57	356
	1916 2983	Gibbs QR, Version M	Stamped Al U-frame, hard-coated cast Al cam, QR pin axle on cable keeper, web cam keeper on teardrop	Hawill's Ltd., 2012 Bill Liebman, 2017	192	104	57	57	339
	1561	Gibbs QR, Version N	Stamped Al U-frame, hard-coated cast Al cam, QR pin axle, web keeper	Robert Bowman, 2012	163	104	58	57	341
	1511	Gibbs QR, Version O	Stamped Al U-frame, hard-coated cast Al cam, QR pin axle, web keepers	Ben North, 2009	167	104	58	57	340
	205 2247	Gibbs #1	Stamped Al U-frame, hard-coated cast Al cam, QR pin axle on web keeper	Inner Mountain Outfitters, 2006 Bob Thrun Collection, 2017	193	103	77	63	501

(c) 1/2-inch Spring-loaded Gibbs

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	67 1929 2243	Gibbs QR Spring Loaded, Version A	Stamped Al U-frame, 2-coil spring loaded, cast Al cam, QR pin axle on chain keeper	1970s NSS Consignment Sales, 2012 Bob Thrun Collection, 2017	186	104	71	57	421
	3555	Gibbs QR Spring Loaded, Version B	Stamped Al U-frame, coil spring loaded, cast Al cam, QR pin axle, chain keepers & pull	Barton Glasser, 2022	192	103	71	57	417
	262	Gibbs QR Spring Loaded, Version C	Stamped Al U-frame, coil spring loaded, hard-coated cast Al cam, QR pin axle, chain keepers & pull	Gene Clinger, 2008	189	104	71	57	421
	2048	Gibbs QR Spring Loaded, Version D	Stamped SS U-frame, coil spring loaded, cast Al cam, QR pin axle, chain keepers & pull	CarolJo Rushin-Elron, 2016	293	104	70	57	415
	77 261	Gibbs QR Spring Loaded, Version E	Stamped Al U-frame, coil spring loaded, cast Al cam, QR pin axle, chain keepers & pull	Unknown Gene Clinger, 2008	197	104	72	57	427
	2245	Gibbs QR Spring Loaded, Version F	Stamped Al U-frame, coil spring loaded, cast Al cam, QR pin axle, chain keepers & pull	Bob Thrun Collection, 2017	192	103	71	57	417
	2253	Gibbs QR Spring Loaded, Version G	Stamped Al U-frame, coil spring loaded, cast Al cam, QR pin axle, chain keepers & pull	Bob Thrun Collection, 2017	179	103	72	57	421
	75	Gibbs QR Spring Loaded, Version H	Stamped Al U-frame, wire spring loaded, hard-coated cast Al cam, QR pin axle on chain keeper	Unknown	182	104	70	57	415
	1921	Gibbs QR Spring Loaded, Version I	Stamped SS U-frame, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on chain keeper	Speleoshoppe, 2012	297	104	71	57	417
	1922	Gibbs QR Spring Loaded, Version J	Stamped SS U-frame, wire spring loaded, spring cover, soft punched Al cam, QR pin axle on cable keeper	Speleoshoppe, 2012	334	104	71	63	461
	1923	Gibbs QR Spring Loaded, Version K	Stamped SS U-frame, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on cord keeper	Speleoshoppe, 2012	337	107	71	69	517
	1510	Gibbs QR Spring Loaded, Version L	Stamped SS U-frame, wire spring loaded, hard-coated cast Al cam, QR pin axle on cable keeper	Sheryle Bauer, 2009	337	103	72	63	466
	263 1509	Gibbs QR Spring Loaded, Version M	Stamped Al U-frame, wire spring loaded, hard-coated cast Al cam, QR pin axle on cable keeper	Ronald Krieger, 2008 Sheryle Bauer, 2009	180	104	70	57	419
	2254	Gibbs QR Spring Loaded, Version N	Stamped Al U-frame, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on cable keeper	Bob Thrun Collection, 2017	187	103	72	65	477
	71	Gibbs QR Spring Loaded, Version O	Stamped Al U-frame, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on cable keeper	John E. Weinel, Inc., 1991	187	104	72	65	487
	1562	Gibbs QR Spring Loaded, Version P	Stamped Al U-frame, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on cord keeper	Robert Bowman, 2012	183	104	71	64	475
	1563	Gibbs QR Spring Loaded, Version Q	Stamped Al U-frame, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on WEB keeper	Robert Bowman, 2012	184	104	71	64	475
	1564	Gibbs QR Spring Loaded, Version R	Stamped Al U-frame, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on cord keeper	Robert Bowman, 2012	186	104	71	64	475

(d) 5/8" Gibbs

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	112	Gibbs #2 Prototype	Stamped 5/8" Al U-frame, wear roll-pins, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on web keeper	John E. Weinel, Inc., 1993	244	104	76	63	498
	72	Gibbs #2, Version A (Later called Gibbs #3)	Stamped 5/8" Al U-frame /w dimples, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on web keeper	Karst Sports, 1995	239	104	76	63	498
	206	Gibbs #2, Version B	Stamped 5/8" Al U-frame /w dimples, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on web keeper	Inner Mountain Outfitters, 2006	197	104	76	63	498
	2256	Gibbs #2SS, Version A	Stamped 5/8" SS U-frame, wire spring loaded /w screw, punched Al cam, QR pin axle on cable keeper	Bob Thrun Collection, 2017	335	111	72	63	502
	3419	Gibbs #2SS, Version B	Stamped 5/8" SS U-frame, wire spring loaded /w screw, forged Al cam, QR pin axle on cable keeper /w teardrop	Robert Quast, 2021	342	103	71	63	459
	3420	Gibbs #2SS, Version C	Stamped 5/8" SS U-frame, wire spring loaded /w screw, spring cover, forged Al cam, QR pin axle on cable keeper /w teardrop	Robert Quast, 2021	346	103	71	68	498
	3549	Gibbs #2SS, Version D	Stamped 5/8" SS U-frame, wire spring loaded /w screw, spring cover, hard-coated Al cam, QR pin axle on web keeper	Kelley Deem, 2022	335	103	76	61	479
	141	Gibbs #2SS, Version E (Later called Gibbs #3SS)	Stamped 5/8" SS U-frame /w dimples, wire spring loaded /w cotter pin, spring cover, hard-coated Al goo cam, QR pin axle on web keeper	On Rope 1, 1999	342	103	76	63	493
	279	Gibbs #3, Version B	Stamped 5/8" Al U-frame /w dimples, wire spring loaded, spring cover, hard-coated milled Al cam, QR pin axle on web keeper	On Rope 1, 2009	237	104	77	63	503
	2987	Gibbs #3S, Version A	Stamped 5/8" SS U-frame /w dimples, wire spring loaded, spring cover, hard-coated milled Al cam, QR pin axle on web keeper	Lee-Anne Kummerer, 2021	331	104	75	63	490
	2360	Gibbs #3S, Version B	Stamped 5/8" SS U-frame /w dimples, wire spring loaded, spring cover, hard-coated milled Al cam, QR pin axle on web keeper	Jim Goodall Equipment, 2018	331	104	74	64	490

(e) 3/4" Aluminum Shell Gibbs

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	73	Gibbs 3/4" QR	Stamped 3/4" Al U-frame, cast Al cam, QR pin axle on cable keeper	John E. Weinel, Inc.	407	105	84	76	670
	74	Gibbs 3/4" QR Spring Loaded, Version A	Stamped 3/4" Al U-frame, coil spring loaded /w chain keepers, cast Al cam, QR pin axle on cable keeper	John E. Weinel, Inc.	400	105	87	76	694
	1919	Gibbs 3/4" QR Spring Loaded, Version B	Stamped 3/4" Al U-frame, coil spring loaded /w chain keepers, cast Al cam, QR pin axle on cable keeper	Speleoshoppe, 2012	398	116	86	75	745
	69	Gibbs 3/4" QR Spring Loaded, Version C	Stamped 3/4" Al U-frame, wire spring loaded, cast Al cam, QR pin axle on cable keeper	Bob & Bob, 1989	383	105	87	76	694
	267	Gibbs #3, Version A	Stamped 3/4" Al U-frame, wire spring loaded, punched Al cam, QR pin axle on cable keeper	William Deaton, 2009	311	104	90	72	671
	142 3435	Gibbs #4, Version A	Stamped 3/4" Al dimpled U-frame, wire spring loaded, punched goo-coated Al cam, QR pin axle on web keeper	John E. Weinel, Inc., 1999 Jonathan M. White, 2021	325	104	92	68	651
	280	Gibbs #4, Version B	Stamped 3/4" Al U-frame /w dimples, wire spring loaded, spring cover, hard-coated milled Al cam, QR pin axle on web keeper	On Rope 1, 2009	309	103	91	63	589

(f) 3/4" Stainless Steel Shell Gibbs

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	76	Gibbs 3/4" QR, Stainless Steel, Version A	Stamped 3/4" SS U-frame, cast Al cam, QR pin axle on cable keeper	John E. Weinel, Inc., 1989	500	105	81	76	646
	2316	Gibbs 3/4" QR, Stainless Steel, Version B	Stamped 3/4" SS U-frame, cast Al cam, QR pin axle on cable keeper	On Rope 1, 2017	506	105	83	75	652
	1920 2257	Gibbs 3/4" QR, Stainless Steel, Version C	Stamped 3/4" SS U-frame, cast Al cam, QR pin axle on cable keeper, coil spring /w chains	Speleoshoppe, 2012 Bob Thrun Collection, 2017	505	107	83	75	664
	143	Gibbs #4S, Version A	Stamped 3/4" SS dimpled U-frame, wire spring loaded, punched goo-coated Al cam, QR pin axle on web keeper	John E. Weinel, Inc., 1999	438	105	91	64	612
	274	Gibbs #4S, Version B	Stamped 3/4" SS dimpled U-frame, wire spring loaded, Cast Al cam, QR pin axle on web keeper	William Deaton, 2009	425	104	87	64	574
	3434	Gibbs #4S, Version C	Stamped 3/4" SS dimpled U-frame, wire spring loaded, CAST Al cam, AVK QR pin axle on web keeper	Ryan Melton, 2021	422	103	89	63	574

(g) Bolted Gibbs

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	281	Gibbs #3B	Stamped 5/8" Al U-frame /w dimples, wire spring loaded, spring cover, hard-coated milled Al cam, bolt axle	On Rope 1, 2009	230	104	78	56	454
	282	Gibbs #3SB	Stamped 5/8" SS U-frame /w dimples, wire spring loaded /w cotter pin, spring cover, hard-coated milled Al cam, bolt axle	On Rope 1, 2009	319	104	76	51	398
	283	Gibbs #4B	Stamped 3/4" Al U-frame /w dimples, wire spring loaded, spring cover, hard-coated milled Al cam, bolt axle	On Rope 1, 2009	303	103	92	56	529
	2942	Gibbs #4SB, Version A	Stamped 3/4" SS U-frame /w dimples, wire spring loaded /w cotter pin, spring cover, forged Al cam, bolt axle	Noco Gear, 2019	422	104	89	57	523
	284	Gibbs #4SB, Version B	Stamped 3/4" SS U-frame /w dimples, wire spring loaded /w cotter pin, spring cover, hard-coated milled Al cam, bolt axle	On Rope 1, 2009	414	104	92	56	535

(h) Gibbs ASR

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	1572	Gibbs ASR, Version A	Stamped 5/8" Al U-frame, spring-wire loaded, hard-coated milled Al cam, QR Pin axle, bead chain keeper	prstraining.com, 2012	246	104	77	68	543
	1573	Gibbs ASR, Version B	Stamped 5/8" Al U-frame, spring-wire loaded, hard-coated milled Al thumb cam, QR Pin axle, bead chain keeper	prstraining.com, 2012	255	103	90	63	585
	1574	Gibbs ASR, Version C	Stamped 5/8" Al U-frame, spring-wire loaded, hard-coated milled Al cam, QR Pin axle, web keeper	prstraining.com, 2012	235	104	76	63	494

(i) Modified Gibbs

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	3551	Gibbs, Modified: Connector Link Mount, Version A	Insert and spacers added to mount on MS22002-1 connector link	Kelley Deem, 2022	252	103	74	65	495
	3648	Gibbs, Modified: Connector Link Mount, Version B	Insert added to mount on MS22002-1 connector link	Kelley Deem, 2022	159	103	71	36	266
	68	Gibbs, Modified: Pivot Arm	Parks Brothers modification: Al spring-loaded Gibbs with cam mounted on swinging pivot arm.	Bob Elron, ca. 1985	192	104	67	57	397
	64	Gibbs, Modified: Roller Cam, Version A	Modified Al spring-wire Gibbs with rollers.	Gibbs Products Inc., ca. 1978	198	104	63	36	236
	1931	Gibbs, Modified: Roller Cam, Version B	Modified Al spring-wire Gibbs with rollers.	Barbara Anne Am Ende, 2012	192	102	63	36	232
	3552	Gibbs, Modified: Roller Cam, Version C	Modified Al spring-wire Gibbs with roller, insert and spacers added to mount on MS22002-1 connector link	Kelley Deem, 2022	270	103	71	65	474
	253	Gibbs, Modified: Spring-wire with truncated cam	Stamped Al U-frame, original cast cam (cut tip), pin axle /w spring-wire keeper and retainer	Bill Boehle, 2008	144	103	63	37	237
	3553	Gibbs, Modified: Spring-wire with wire braid cam keeper	Stamped Al U-frame, cast ribbed "racing" cam, pin axle /w spring-wire keeper and retainer, added braided wire cam keeper	Kelley Deem, 2022	152	103	71	37	266
	78	Gibbs, Modified: Storrick Bogibbs	RH, modified SS Gibbs, cam mounted on custom axle bolt, one side cut open for rope clearance, back relieved for sling clearance, noncommercial	Gary Storrick, 1983	286	102	60	37	226
	3565 2315	Rescue Technology Gibbs Replacement Spring Kit (installed on a Gibbs QR)	Stamped Al U-frame, cast Al cam on web keeper, QR pin axle on chain keepers, Gibbs Replacement Spring Kit installed	Rescue Technology, 2009 Bob Liebman Estate, 2017	194	104	58	57	344

(j) Gibbs Quick

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	79 80 81 2251	Gibbs Quick 1/2 inch, Version A	Two-piece milled Al frame on roll pin hinge, wire spring loaded, spring cover, hard-coated cast Al cam, QR pin axle on web keeper	John E. Weinel, Inc., 1991 Inner Mountain Outfitters, 1991 Speleofest Door Prize, 1992 Bob Thrun Collection, 2017	268	93	87	57	461
	2252	Gibbs Quick 1/2 inch, Version B	Two-piece milled Al frame on roll pin hinge, wire spring loaded, spring cover, hard-coated punched Al cam, QR pin axle on web keeper	Bob Thrun Collection, 2017	280	92	91	57	472

Non-Gibbs Ascenders

Image	ID	Device ↓	Description	Acquired	Weight ↓	Height ↓	Width ↓	Thickness ↓	Std. volume ↓
	2050	ATN, Version A	Stamped Al frame with opposing U-channels, milled hard-coated Al cam, retaining pin, heavy keeper	ATN, Inc., 2016	219	88	90	44	349
	2115	ATN, Version B	Stamped Al frame with opposing U-channels, milled hard-coated Al cam, retaining pin, heavy cable keeper	Bob Thrun Collection, 2017	239	88	90	44	349
	3605	Bassett Metal Studios	Al side plates, 3 Al U-channel rollers, Gibbs Cam, QR Pin	Bassett Metal Studios, 2023	301	102	98	57	569
	59 2262	Bogibbs	LH & RH, Hungarian, stamped SS U-frame, punched SS cam mounted on SS axle bolt, one side cut open for rope clearance	Bill Franz, 1992 Bob Thrun Collection, 2017	172	96	53	26	132
	60	Brew BJ Ropewalker, Version A	Stamped SS U-frame, cast Al cam, Pin axle, spring-wire retainer	Al Fincham, ca. 1980	192	102	60	43	263
	2261	Brew BJ Ropewalker, Version B	Stamped SS U-frame, anodized cut Al cam, Pin axle, spring-wire retainer	Bob Thrun Collection, 2017	178	102	60	10	64
	2955	CMC	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, QR pin axle	Sales Unlimited, 2019	236	113	80	60	542
	153 2269	CMI Ropewalker, Aluminum	Stamped Al U-frame /w mud slots, cast hard-anodized Al cam, QR axle, cable cam/axle keeper	K&R Adventure Gear, 2001 Bob Thrun Collection, 2017	196	105	91	58	553
	154 2270	CMI Ropewalker, Stainless	Stamped SS U-frame /w mud slots, cast hard-anodized Al cam, QR axle, cable cam/axle keeper	K&R Adventure Gear, 2001 Bob Thrun Collection, 2017	321	105	91	58	553
	1979	David Jones	Stamped Al U-frame, milled Al cam, QR pin axle	David Jones, 2014	160	103	58	63	459
	91	Eric Ellested	Stamped At U-shell, milled cam /w eye bolt, drilled hex-head bolt /w hitch pin clip or alternate QR pin axle, noncommercial, reportedly only 4 made by Eric Ellested.	Mike Moser, 1993	157	77	55	40	169
	82 2075	G.O.S.H. Cam, Version A	RH, Open-sided milled Al frame, swinging SS side plate, milled Al cam, bolt axle, captured spring-loaded pin closure	R. C. Schroeder, 1992 Bob Thrun Collection, 2017	169	51	79	52	210
	83	G.O.S.H. Cam, Version B	RH, Open-sided milled Al frame, swinging SS side plate, milled Al cam, bolt axle, captured QR pin closure	R. C. Schroeder, 1992	171	50	79	52	205
	84 175 2263	G.O.S.H. Cam, Version C	LH, Open-sided milled Al frame, swinging SS side plate, milled Al cam /w wear pin, bolt axle, captured spring-loaded pin closure	Bill Storage, 1993; William Shrewsbury, 2004 Bob Thrun Collection, 2017	196	50	87	61	265
	3537	G.O.S.H. Cam, Version D	LH & RH, Open-sided milled Al frame, swinging ss side plate, milled Al cam /w wear pin, bolt axle, captured QR pin closure	Sheila Gallogly / Geary Schindel, 2022	176	49	89	56	245
	3535 2075	G.O.S.H. Cam, Version E	RH, Open-sided milled Al frame, swinging Al side plate, milled Al cam /w wear pin, machined axle, sealed spring-loaded pin closure	R. C. Schroeder, 2002 Bob Thrun Collection, 2017	121	35	85	35	105
	163 2076	G.O.S.H. Cam, Version F	RH, Open-sided milled Al frame, swinging Al side plate, milled Al cam /w wear pin, machined axle, sealed spring-loaded pin closure, milled pivoting attachment fitting	R. C. Schroeder, 2002 Bob Thrun Collection, 2017	151	37	80	36	106
	1980	Good Makings	Stamped Al U-frame /w dimples, wire spring loaded, spring cover, punched Al cam, QR pin axle on cable keeper	Yungfeng Xiao, 2014	281	104	78	65	526
	235	Infernal Machine	Folded Al U-frame, cut Al cam, bolt axle /w nut, swivel, noncommercial.	Dwight Deal, 2007	300	124	84	44	459
	2032	John Woods, Version A	Homemade, bent Al U-frame, cut Al cam on web keeper, QR pin axle on string keeper	John Woods, 2015	197	109	75	70	571
	2033	John Woods, Version B	Homemade, bent Al U-frame, cut Al cam on web keeper, QR pin axle on string keeper, side ring	John Woods, 2015	195	108	76	70	568
	87	Kantyú	LH, Hungarian, stamped Al U-frame, milled Al cam mounted on axle bolt, one side cut open for rope clearance	International Congress of Speleology, 1980	106	88	52	30	137
	57 1917	Levistan (Левистан), Version A	Russian, milled Ti U-frame with swinging side on 21 tooth hinge, milled cam /w ring, captured QR pin axle/latch	Speleoshoppe, 1994 Speleoshoppe, 2012	145	56	45	29	73
	3604	Levistan (Левистан), Version B	Russian, milled Ti U-frame with swinging side on 20 tooth hinge, milled cam /w ring, captured QR pin axle/latch	Bassett Metal Studios, 2023	107	60	66	30	118
	174	Levistan (Левистан), Version C	Folded steel frame, milled steel cam, pin axle, extension arms	William Shrewsbury, 2004	129	104	91	30	285
	2900	Levistan (Левистан), Version D	Milled Al frame with swinging side on 15 tooth hinge, milled cam /w ring, steel cam face shield, captured pull pin axle/latch	Ed Sira, 2019	136	81	40	40	130
	2901	Levistan (Левистан), Version E	Milled Steel frame with swinging side on 15 tooth hinge, milled cam /w ring, pivoting cam face, captured pull pin axle/latch	Ed Sira, 2019	150	64	35	44	99
	2902	Levistan (Левистан), Version F	Milled Al frame with swinging side on 7 tooth hinge, milled cam, steel cam face shield, captured axle, spring-loaded latch	Ed Sira, 2019	161	37	43	55	90
	89	Lewis	UK, stamped SS U-frame, cast? Al cam, pin axle, spring-wire retainer	Al Fincham, 1981	195	104	570	40	2371
	88	Lewis with Roller	UK, Al side plates bolted to Al block back, 2 rollers, cast? Al cam, pin axle, spring-wire retainer	Caving Supplies, 1982	259	118	75	41	363
	159	Lucas	Homemade, half pipe /w ears, hand cut cam /w rope bollards	Phil Lucas, 2001	305	129	48	71	441
	242	Paquette	Homemade, folded open-sided SS frame, hand cut cam, bolt axle, milled safety block, noncommercial	Gary Storrick, 2008	315	128	95	40	487
	2266	Petzl Macrocender	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, pin axle with ball, wire clip backup	Bob Thrun Collection, 2017 mind-me-jacobs, 2022	335	114	90	53	561
	1578	Petzl Microcender, Version A	Milled Al frame, hard-coated milled Al cam, pin axle with spring-loaded catch fitting milled frame slot & hole	Tom Furey, 2012	159	76	57	43	187
	2102	Petzl Microcender, Version B	Milled Al frame, hard-coated milled Al cam, pin axle with spring-loaded catch fitting milled frame slot & hole	Bob Thrun Collection, 2017	160	76	57	43	187
	2298	Petzl Rescucender, Version A	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, large eye,pin axle with spring-loaded catch fitting milled frame slot & hole	Bob Thrun Collection, 2008	251	113	75	46	390
	3603	Petzl Rescucender, Version B	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, large eye, pin axle with spring-loaded catch fitting milled frame slot & hole	Mark Lamonica, 2023	253	113	77	46	404
	2070	Petzl Rescucender, Version C	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, small eye, pin axle with spring-loaded catch fitting milled frame slot & hole	Bob Thrun Collection, 2008	253	113	77	46	400
	2042	Petzl Rescucender, Version D	Milled Al frame, hard-coated milled Al cam on SS arm, pin axle with spring-loaded catches fitting milled frame slots	Inner Mountain Outfitters, 2016	254	109	82	36	318
	207	Polish	Stamped Al U-frame, cast Al cam, pin axle with cross pin on cord keeper	Andrzej Mistela, 2006	147	105	58	44	269
	1575	Progressive Rescue Solutions PRG	Stamped 5/8" Al U-frame, spring-wire loaded, hard-coated milled Al thumb cam, QR Pin axle, bead chain keeper	prstraining.com, 2012	253	103	99	58	593
	2260	Red Rose	Stamped SS U-frame, handmade Al cam, Pin axle, spring-wire retainer	Bob Thrun Collection, 2017	206	103	60	37	225
	231	Reflex (Рефлекс)	Stainless Steel, side opening, basal extensions on shell & cam, pivoting flat cam face	Konstantin Serafimov, 2007	278	137	86	30	349
	204 2283	Rock Exotica Double Microcender (a.k.a. Dualcender)	Milled Al frame, two hard-coated milled Al cam on spring-wire keeper, sewn web sling, pin axle with spring-loaded catch fitting milled frame slot & hole	WesSpur Tree Equipment, 2006 Bob Thrun Collection, 2017	247	76	58	65	284
	124	Rock Exotica Large Rescucender (Model 302002)	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, pin axle /w ball and clip retention	On Rope 1, 1997	334	115	90	53	549
	92 2264	Rock Exotica Microcender (Model 302040)	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, pin axle with spring-loaded catch fitting milled frame slot & hole	Inner Mountain Outfitters, 1990 Bob Thrun Collection, 2017	136	72	57	45	185
	93	Rock Exotica Rescucender, Version A	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, pin axle with spring-loaded catch fitting pin /w hole on frame	Inner Mountain Outfitters, 1989	229	113	76	45	386
	94 2267	Rock Exotica Rescucender, Version B (Model 302011)	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, pin axle with spring-loaded catch fitting milled frame slot & hole, wear pin	Inner Mountain Outfitters, 1992 Bob Thrun Collection, 2017	234	113	75	45	381
	1530	Rock Exotica Rescucender, Version C	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, pin axle with spring-loaded catch fitting milled frame slot & hole	On Rope 1, 2009	252	113	75	46	392
	95	Roehr & Katon	Stamped Al U-shell, hand-cut cam, pin axle, hitch pin clip retainer, noncommercial	Gary Moss, 1979	137	100	58	31	180
	3624	Russian Bogibbs	Milled Al shell & cam, SS axle bolt, one side cut open for rope clearance, spring-loaded cam stop	Artyom Babin (Артём Бабин), 2023	161	90	75	27	181
	103	Russian Cable, Version A	Folded steel frame, milled steel cam, pin axle, spring-wire keeper	Ed Sira, 1993	175	90	45	33	134
	3578	Russian Cable, Version B	Folded steel frame, milled Al cam, pin axle, spring-wire keeper	Artyom Babin (Артём Бабин), 2022	147	92	68	34	213
	3582	Russian Cable, Version C	Folded SS frame, milled SS cam, SS pin axle, spring-wire keeper	Artyom Babin (Артём Бабин), 2023	168	79	79	34	212
	3627	Russian Cable, Version D	Folded Ti frame, milled SS cam, SS pin axle, spring-wire keeper	Artyom Babin (Артём Бабин), 2023	170	94	73	41	278
	96 2059	Russian Rope, Version A	Milled Al frame, swinging side plate, milled Al cam on brass rivet	John E. Weinel, Inc., 1994 Bob Thrun Collection, 2017	97	46	72	28	93
	3643	Russian Rope, Version B	Folded Ti frame, milled laminated Ti cam, SS pin axle, spring-wire keeper	Artyom Babin (Артём Бабин), 2024	131	62	78	25	120
	228	Russian Speleo Club "Barrier"	Folded SS frame, cut Al cam, axle in slot, noncommercial	Marina Chugnova, 2007	100	81	87	33	230
	85 1525 2077 2306	Salewa Hiebler, Version A	Open-sided forged Al frame, forged spring-loaded Al cam /w staked axle	Darrel Tomer, 1984 Siray Kosek, 2010 Bob Thrun Collection, 2017 Bill Liebman, 2017	109	46	107	30	148
	86 3646	Salewa Hiebler, Version B1	Open-sided forged Al frame, forged spring-loaded Al cam /w staked axle, wire safety catch on frame	Eastern Mountain Sports, 1979 S. Perry, 2024	105	46	107	30	148
	86 1515 1542 2078 3548	Salewa Hiebler, Version B2	Open-sided forged Al frame, forged spring-loaded Al cam /w staked axle, wire safety catch on frame	Eastern Mountain Sports, 1979 Jorge Gutic, 2009 Philip Harris, 2010 Bob Thrun Collection, 2017 Kelley Deem, 2022	109	46	107	30	148
	1526	Salewa Hiebler, Version C	Open-sided forged Al frame, forged spring-loaded Al cam /w staked axle, wire safety catch on frame	Siray Kosek, 2010	109	49	108	32	171
	3514	Salewa Hiebler, Version D	Open-sided forged Al frame, forged spring-loaded Al cam /w staked axle, wire safety catch on frame	Wild Gear Deals, 2022	110	49	107	33	172
	3515	Salewa Hiebler, Version D, Repaired	Open-sided forged Al frame, forged spring-loaded Al cam /w staked axle, replacementwire safety catch on frame	Wild Gear Deals, 2022	109	49	107	33	172
	3630	Sluka Bogibbs	LH & RH, stamped Ti  U-frame, Al cam mounted on axle bolt, one side cut open for rope clearance	Martin Sluka, 2024	102	91	63	24	138
	3629	Sluka Chest Bogibbs	1 chest, stamped Ti  U-frame, Al cam mounted on axle bolt, screw safety, one side cut open for rope clearance	Martin Sluka, 2024	140	101	74	29	214
	98	Storrick Thick Shell	Folded SS frame, hardened tool steel milled cam, bolt axle /w hex & wing nuts, noncommercial	Robert W. Storrick, 1971	333	90	55	42	208
	97	Storrick Thin Shell	Folded SS frame, hardened tool steel milled cam, bolt axle /w hex & wing nuts, noncommercial	Robert W. Storrick, 1971	294	92	55	42	213
	3566	Unknown	RH, polish?, stamped steel  U-frame,  steel cam mounted on steel axle bolt, one side cut open for rope clearance	Liviu Valenas, 2022	134	67	92	27	166
	111	Unknown Homemade, Version A	Stamped Al shell, hand cut Al cam, bolt & nut axle, noncommercial	?	161	109	65	38	269
	137	Unknown Homemade, Version B	Folded steel U-frame, cut steel cam, bolt axle /w nut & cotter pin, noncommercial	NSS Auction, 1999	409	103	58	39	233
	3440	Unknown Homemade, Version C	Folded open-sided Al frame, hand cut cam, L–handle QR pin, noncommercial	cptnamerica2003, 2021	209	102	63	78	504
	3511	Unknown Homemade, Version D	Homemade, folded open-sided Al frame, hand cut smooth cam, L–handle QR pin, noncommercial	cptnamerica2003, 2022	202	102	70	78	556
	3512	Unknown Homemade, Version E	Homemade, folded open-sided Al frame, hand cut cam, L–handle QR pin, cable keeper, noncommercial	cptnamerica2003, 2022	192	100	61	78	473
	3513	Unknown Homemade, Version F	Homemade, folded open-sided steel frame, hand cut cam, L–handle QR pin, noncommercial	cptnamerica2003, 2022	213	108	56	78	473
	3615	Unknown Homemade, Version G	2 Homemade, folded U-shaped Al frame, cast cam /w cut teeth, drilled rivet axle, hair pin keeper,	Barry J. Rousey, 2023	168	108	63	52	355
	90	Unknown "LWO"	Homemade, folded AL frame, hand cut & bolted cam, pin axle, spring-wire retainer, noncommercial	?	270	101	68	47	323
	250	Unknown "S," Version A	Homemade, folded open-sided Al frame, hand cut cam, bolt axle, cut angle safety, noncommercial	Bill Boehle, 2008	139	102	69	29	202
	251	Unknown "S," Version B	Homemade, folded open-sided Al frame, hand cut cam, bolt axle, cut angle safety, plastic rope guide, noncommercial	Bill Boehle, 2008	143	101	70	30	210
	117	Ural-Alp	RH, Russian, stamped Ti? U-frame, forged spring-loaded Ti cam mounted on SS axle bolt, one side cut open for rope clearance	John E. Weinel, Inc., 1995	101	65	92	30	179
	168	Ural-Alp Supplemental	RH, Russian, stamped Ti? U-frame, forged spring-loaded Ti cam mounted on SS axle bolt, one side cut open for rope clearance	Ural Sport, 2003	85	70	87	31	185
	2368	Ural-Alp 10.35	RH, Ti shell, spring-loaded Ti cam	Marina Khramstova (Марина Храмцова), 2018	98	65	113	28	206
	149	Varnedoe VACUM (Vertical Assist Climb Up Machine)	Homemade, AL frame & side plate, cable puller cam, bolt axle, cable clip-in point	Bill Varnedoe, 2000	545	112	79	57	503
	2265	Wall Safety RG1 6066	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, pin /w ball axle, hitch pin backup	Bob Thrun Collection	304	99	90	51	457
	2390	Yundxi	Milled Al frame, hard-coated milled Al cam on spring-wire keeper, pin /w ball axle	Bloomyshop / Amazon.com, 2019	177	85	77	62	403