Bob Thrun's Collection

Bob Thrun, a fellow caver and equipment collector passed away in his home on February 7, 2017. He was 77 years old.

I met Bob in the 1970s, and saw him many times over the years at caving functions. We mapped caves together in West Virginia and in Costa Rica. We had several professional interests in common, but our main connection was our common interest in vertical equipment technology.

Bob's 1971 book Prusiking inspired me to start my collection. Bob had told his sister that his wish was that his collection would go to me, and she contacted me shortly after his passing to complete his request.

I never visited Bob and so was never able to see his collection while he was alive, although I had often expressed an interest. Bob often reassured me by stating that I had almost everything that he had, except for a small number of items. It turned out that he had over a hundred that I was missing.

This page shows items that Bob collected. To save space and simplify site maintenance, some of the photos are of equivalent items from my collection.


Ascenders

Eccentric Cam Ascenders
 
Advanced Base Camp, Version A Advanced Base Camp, Version B Advanced Base Camp, Version C Advanced Base Camp, Version C
Advanced Base Camp Advanced Base Camp Advanced Base Camp Anthron AB-20
 
Anthron AC-30, Version A Anthron AC-30, Version B Anthron AC-30, Version C Beal Hold Up
Anthron AC-30 Anthron AC-30 Anthron AC-30 Апыурс
 
Camp Solo Camp Turbo Chest Climb Tech Climbing Technology Evo
Camp Solo Camp Turbo Chest Climb Tech Climbing Technology Evo
 
Clog, Version B Clog, Version D Clog, Version C Clog, Version D
Clog Clog Clog Clog
 
Clog, Version B Clog, Version G Clog, Version B CMI Shorti
Clog Clog Clog CMI Shorti
 
CMI Shorti CMI Shorti II CMI Shorti IV heightec-PMI Compact D41A, Version A
CMI Shorti CMI Shorti II CMI Shorti IV heightec-PMI Compact D41A
 
heightec-PMI Compact D41A, Version B heightec-PMI Rescue Compact D41A/ D44 Rope Grab/ D44A heightec-PMI Twist D42A, Version A heightec-PMI Twist D42A, Version B
heightec-PMI Compact D41A heightec-PMI Rescue Compact D41A/ D44 Rope Grab/ D44A heightec-PMI Twist D42A heightec-PMI Twist D42A
 
Kong-Bonaiti Cam-Clean, Version A Kong-Bonaiti Cam-Clean, Version B Kong-Bonaiti Modular, Version A Kong-Bonaiti Modular, Version A
Kong-Bonaiti Cam-Clean Kong-Bonaiti Cam-Clean Kong-Bonaiti Modular Kong-Bonaiti Modular
 
Kong Duck Kong Futura Body Krok Chest Strap Ascender NTR
Kong Duck Kong Futura Body Krok Chest Strap Ascender NTR
 
Petzl Basic, Version A Petzl Basic, Version A Petzl Basic, Version I Petzl Basic, Version J
Petzl Basic Petzl Basic Petzl Basic Petzl Basic
 
Petzl Basic, Version J Petzl Basic, Version J Petzl Basic, Version L Petzl Croll, Version A
Petzl Basic Petzl Basic Petzl BasicPetzl Basic Petzl Croll
 
Petzl Croll, Version C Petzl Croll, Version H Petzl Croll, Version H Petzl Croll, Version I
Petzl Croll Petzl Croll Petzl Croll Petzl Croll
 
Russian copy of Petzl Basic Single Rope Technique A1 811 Single Rope Technique A3 Explorer, Version A Single Rope Technique A4-816
Russian Single Rope Technique A1 811 Single Rope Technique A3 Explorer Single Rope Technique A4-816
 
Single Rope Technique A4-816 Single Rope Technique G.P., Version A Rollgliss Rescue Explorer SOB
Single Rope Technique A4-816 Single Rope Technique G.P. Single Rope Technique / Rollgliss / DBI Sala Rescue Explorer SOB
 
Southpaw, Version A Southpaw, Version B Walkosz i Spółka Chest, Version B Walkosz i Spółka Hand
Southpaw Southpaw Walkosz i Spółka Walkosz i Spółka
 
Wild Country Ropeman Wild Country Ropeman II Wild Country Ropeman Mk. 1F Wild Country Ropeman Mk. 2F
Wild Country Ropeman Wild Country Ropeman II Wild Country Ropeman Mk. 1F Wild Country Ropeman Mk. 2F
 
  Wild Country Ropeman Mk. 3F Yoke Chest Ascender  
  Wild Country Ropeman Mk. 3F Yoke  
 
 
Handled Eccentric Cam Ascenders
 
Advanced Base Camp Anthron VauDe AD-10 & AL-15, Version A Anthron VauDe AD-10 & AL-15, Version B Anthron VauDe AD-10 & AL-15, Version B
Advanced Base Camp Anthron VauDe AD-10 & AL-15 Апыурс Апыурс
 
Camp Pilot Climb Tech Climbing Technology Quick'Arbor Clog Expedition, Version B
Camp Pilot Climb Tech Climbing Technology Quick'Arbor Clog Expedition
 
Clog Expedition, Version B Clog Expedition, Version B Clog Expedition, Version B Clog Expedition, Version F
Clog Expedition Clog Expedition Clog Expedition Clog Expedition
 
Clog Expedition, Version G CMI Expedition CMI Expedition, Dual Handle CMI Expedition Twin, Version A
Clog Expedition CMI Expedition CMI Expedition, Dual Handle CMI Expedition Twin
 
CMI 5000, Version A CMI 5000, Version B CMI 5000, Version C CMI 5000, Version D
CMI 5000 CMI 5000 CMI 5000 CMI 5000
 
CMI 5000, Version F CMI 5000, Version B CMI 5002 CMI 5004
CMI 5000 CMI 5000 (a.k.a. 5001) CMI 5002 CMI 5004
 
CMI Large UltrAscender, Version A CMI Large UltrAscender, Version C CMI Small UltrAscender, Version C GrandWall
CMI Large UltrAscender CMI Large UltrAscender CMI Small UltrAscender GrandWall
 
Grivel heightec-PMI Pulsar D40, Version A heightec-PMI Pulsar D40, Version B International Safety Components, Version A
Grivel heightec-PMI Pulsar D40 heightec-PMI Pulsar D40 International Safety Components
 
International Safety Components RP240 Jumar, Version D Jumar 79, Version A
International Safety Components RP240 Jumar Jumar Jumar 78
 
Jumar, Fritschi Jumar, Swiss Rescue Jumar Tree Jumar, WAG
Jumar, Fritschi Jumar, Swiss Rescue Jumar Tree Jumar, WAG
 
Kong-Bonaiti, Version B Kong Hand Futura (small grip) Kong Lift, Version A Kong Procave
Kong-Bonaiti Lift Kong Futura Kong Lift Kong Procave
 
Kong Trender Kong Twin, Version A Kong Twin, Version B Krok, Version C
Kong Trender Kong Twin Kong Twin Krok
 
Krok, Version C LACD LACD Omni USA
Krok LACD LACD Omni USA
 
Petzl Ascension, Versions F1 & F2
Petzl Ascension Petzl Ascension Petzl Ascension Petzl Ascension
 
Petzl Ascension, Version N Petzl Ascension, Version N Petzl Ascension, Version O Petzl Ascentree
Petzl Ascension Petzl Ascension Petzl Ascension Petzl Ascentree
 
Petzl Pompe, Version A Petzl Pompe, Version B PMI Cat PMI Puma  
Petzl Pompe Petzl Pompe PMI Cat PMI Puma
 
Rock Empire Roloff (Modified) Russian Uola, Version A  
Rock Empire Roloff Roloff (Modified) Russian Uola
 
Russian Uola, Version B Russian Uola, Version C Single Rope Technique Caver, 8-11 mm Single Rope Technique Caver, 8-15mm  
Russian Uola Russian Uola Single Rope Technique Caver, 8-11 mm Single Rope Technique Caver, 8-15mm
 
Single Rope Technique Climber Single Rope Technique A1 Explorer Single Rope Technique A1 EXP 6 Large Explorer SOB, Version A  
Single Rope Technique Climber Single Rope Technique A1 Explorer Single Rope Technique / Rollgliss / DBI Sala A1 EXP 6L & 6R SOB
 
Yates Big Wall Yates Big Wall Yoke    
Walkosz i Spółka Yates Big Wall Yoke  
 
 
Handled Lever Cam Ascenders
 
  Black Diamond nForce Russian Copy of Kong-Bonaiti  
  Black Diamond nForce Russian Copy of Kong-Bonaiti  
 
 
Type I Lever Cam Ascenders
 
Bogibbs Brew BJ Ropewalker CMI Ropewalker, Aluminum
ATN Bogibbs Brew BJ Ropewalker CMI Ropewalker
 
CMI Ropewalker, Stainless G.O.S.H. Cam, Version A G.O.S.H. Cam, Version D G.O.S.H. Cam, Version E
CMI Ropewalker G.O.S.H. Cam G.O.S.H. Cam G.O.S.H. Cam
 
G.O.S.H. Cam, Version E Gibbs spring-wire, Version B Gibbs spring-wire, Version E Gibbs QR. Version A
G.O.S.H. Cam Gibbs Gibbs Gibbs
 
Gibbs QR Spring Loaded, Version A Gibbs QR Spring Loaded, Version D
Gibbs Gibbs Gibbs Gibbs
 
Gibbs QR Spring Loaded, Version D Gibbs QR Spring Loaded, Version J Gibbs #2SS Gibbs Quick 1/2 inch
Gibbs Gibbs Gibbs Gibbs
 
Gibbs Quick 1/2 inch Good Makings Petzl Petzl
Gibbs Good Makings Petzl Macrocender Petzl Microcender
 
Reflex Rock Exotica Dualcender
Petzl Rescucender Petzl Rescucender Red Rose Rock Exotica Double Microcender
 
Rock Exotica Microcender (Model 302040) Rock Exotica Rescucender, Version B (Model 302011) Russian Rope Salewa Hiebler, Version A
Rock Exotica Microcender Rock Exotica Rescucender Russian Salewa Hiebler
 
  Salewa Hiebler, Version B Varnedoe  
  Salewa Hiebler Wall Safety RG1 6066  
 
 
Type II Lever Cam Ascenders
 
Petzl Shunt, Version A Petzl Shunt, Version C Russian copy of Petzl Shunt  
Petzl Shunt Petzl Shunt Russian  
 
 
Foot Ascenders
 
Buckingham Mar-Bar Camp TurboFoot Climbing Technology Quick Step, Version A CMI, Version A
Buckingham Mar-Bar Camp TurboFoot Climbing  Technology Quick  Step CMI
 
CMI, Version B Kong Foot Futura Millet 9400 Foot Ascender Petzl Pantin B02
CMI Kong Foot Futura Millet Petzl Pantin
 
Petzl Pantin B02ALA & B02ARA Petzl Pantin B02BLA & B02BRA TSA TSA
Petzl Pantin Petzl Pantin TSA Economy TSA Economy
 
 
Miscellaneous Mechanical Ascenders
 
Camp Lift GrandWall uAscend GrandWall uAscend Petzl Tiblock B01
Camp Lift GrandWall uAscend GET International Lineboss Petzl Tiblock
 
Petzl Zigzag Russian, Version A Unicender, Version A Unicender, Version B
Singing Tree Rope Runner Russian Unicender Unicender
 
Unicender, Version D Ural Alp Basic 10.05 Ural Alp Basic 10.05 Ural Alp Basic 10.05
Unicender Ural Alp Basic Ural Alp Basic Ural Alp Basic
 
USHBA Basic 10.03 USHBA Handled Wild Country Hand  
USHBA Basic USHBA Handled Wild Country Hand  
 
 
Semimechanical Ascenders
 
  Thrun    
  Thrun, Version A    
 
 

Decenders

Figure Eights
 
CMI Standard, Version B Mammut, Version B Rocksport SMC Straight Eight, Version B
CMI Mammut Rocksport SMC
 
 
Figure Eights with Ears
 
  Handley Cool 8, Thin-walled    
  Handley Cool 8    
 
 
Complex Figure Eights
 
  Emery Magic 31700 Emery Pratic 31701    
  Emery Magic 31700 Emery Pratic 31701  
 
 
Horns
 
  Ruapehu, Version A    
  Ruapehu    
 
 
J-frame Racks
 
BlueWater Long, Version A Howell-N-Mann Smith Special, Version A John Cole, Version B SMC Straight
BlueWater Long Howell-N-Mann Bruce Smith Special John Cole SMC
 
  Storrick MegaRack Storrick MegaRack  
  Unknown Unknown  
 
 
U-frame Racks
 
Bassett Metal Studios Pico-Rack British Speleoshoppe SupeRack, Version A  
Bassett Metal Studios Pico-Rack British Speleoshoppe SupeRack  
 
 
Fixed Multibar Descenders
 
Russian Scissors Single Rope Technique GTM Single Rope Technique S150, Version A  
Russian Scissors Single Rope Technique GTM Single Rope Technique S150  
 
 
Bobbins
 
Petzl, double rope, Version B Petzl, single rope, Version B Petzl, single rope, Version G Repetto Spider
Petzl, double rope Petzl Simple Petzl Simple Rocksport Buggery Box
 
 
Stop Bobbins
 
Climb Tech Kong Indy Petzl I'D. Large, Version A Petzl I'D, Small, Version A
Climb Tech Kong Indy Petzl I'D Petzl I'D
 
Petzl Stop, Version C S.A.R.L. Voynett Tracson SMC Spider  
Petzl Stop S.A.R.L. Voynett Tracson SMC Spider  
 
 
False Bobbins
 
Anthron DSD-25 Single Rope Technique D1, Version B Single Rope Technique D1DB Single Rope Technique D2, Version B
Anthron DSD-30 Single Rope Technique Single Rope Technique Single Rope Technique
 
 
Toy Bobbins
 
  Keychain Bobbin    
  Keychain Bobbin    
 
 
Poly-Bollards
 
  Lewis, Version B    
  Lewis    
 
 
Miscellaneous Descenders
 
  New Alp Ring    
  New Alp Ring    
 
 

Belayers

Slotted "Sticht" Plate Belayers
 
  Salewa Sticht (/w spring), 9/11, Version B    
  Salewa Sticht    
 
 
Miscellaneous Belay Plates
 
  Chouinard Baechli, Version A Edelrid Bankl    
  Chouinard Baechli Edelrid Bankl  
 
 
Belay Tubes
 
  Advanced Base Camp ARC, Version A Omega Pacific SBG II, Version A  
  Advanced Base Camp ARC Omega Pacific SBG II  
 
 
Lever Box Belay Devices
 
  Petzl Grigri Trango Cinch, Version B  
  Petzl Grigri Trango Cinch  
 
 
Self-belay Devices
 
  Rock Exotica SoloAid Rock Exotica SoloAid  
  Rock Exotica SoloAid Rock Exotica SoloAid  
 
 

Miscellaneous Devices

Anchor Brakes (Dissipators)
 
  MSR Auto Belayer    
  MSR Auto Belayer    
 
 
Chest Boxes
 
Bassett Metal Studios BlueWater Fritzke Alpine Box Gossett, Version A
Bassett Metal Studios BlueWater Fritzke Alpine Box Gossett Block
 
Gossett, Version D Gossett, Version E John Blum, Version A
Gossett Block Gossett Block John Blum John Blum
 
John Blum, Version D Ledbetter Single Neil Box, Version B On Rope 1, Lightweight Double, Version B
John Blum Ledbetter Single Neil Box On Rope 1, Lightweight Double (a.k.a. Stealth II)
 
PMI, single rope PMI, double rope R. C. Schroeder, Version A R. C. Schroeder, Version B
PMI PMI R. C. Schroeder R. C. Schroeder
 
R. C. Schroeder, Version B R. C. Schroeder, Version D Simmons Compact Double Simmons Double
R. C. Schroeder R. C. Schroeder Simmons Compact Double Simmons Double
 
Simmons Racing Single Simmons Racing Double Simmons Single Simmons Single Custom Cave Gear
Simmons Racing Single Simmons Racing Double Simmons Single Simmons Single Custom Cave Gear
 
  Simmons Single Prototype    
  Simmons Single Prototype    
 
 
Rope Grabs
 
Camp Goblin Climb Right 85525 Climb Right 85525 Climb Right 85525
Camp Goblin Climb Right Climb Right Climb Tech
 
DMM Buddy heightec-PMI Vector
Kong Back-Up
DMM Buddy heightec-PMI Vector ISC Rocker Kong Back-Up
 
Miller 8173 Microloc Mio Mechanical Petzl ASAP, Version A Petzl Macrograb B52
Miller Mio Mechanical Petzl ASAP Petzl Macrograb
 
Petzl Micrograb B53 PMI Arrestor PMI Arrestor PMI Grip-Tech Jr.
Petzl Micrograb PMI Arrestor PMI Arrestor PMI Grip-Tech Jr.
 
PMI Progressor, Version B Safe-Tec Duck-R Single Rope Technique A5 811 L Single Rope Technique A5 811 L
PMI Progressor Safe-Tec Duck-R Single Rope Technique Skylotec Ergogrip
 
  SMC Grip    
  SMC Grip    
 
 
Hauling Pulleys
 
CMI Single Micro Hauler CMI Uplift Kong Miniblock Futura Petzl Mini-Traxion
CMI Micro Hauler CMI Uplift Kong Miniblock Futura Petzl Mini-Traxion
 
Petzl Wall Hauler Rock Exotica Wall Hauler (Model 302010) SRT RM22 Rescuemate Ural-Alp Hauler, Version B
Petzl Wall Hauler Rock Exotica Wall Hauler SRT Rescuemate USHBA Hauler
 
  USHBA Hogwauler, Version A    
  USHBA Hogwauler    
 
 
Adjustable Cow's Tails
 
  Kong Doble Longe (Slyde)      
  Kong Slyde    
 
 
Flipline Adjusters
 
Advanced Ropeclimbing Technology Positioner 2 Advanced Ropeclimbing Technology Positioner 2 Gibbs Klimair  
Advanced Ropeclimbing Technology Positioner Advanced Ropeclimbing Technology Positioner Gibbs Klimair  
 
 
Miscellaneous Devices
 
IMO Extension Arm Advanced Ropeclimbing Technology Lockjack Sport Crescent Tool Cable Puller Crescent Tool Cable Puller
Inner Mountain Outfitters Extension Arm Advanced Ropeclimbing Technology Lockjack Sport CMI Pro Knot Klein Chicago® Grip
 
  Mammut Rotor Rotation Gate Carabiner    
  Mammut Rotor Rotation Gate Carabiner