- $28.00 Vintage K & E Doric 9068 Slide Rule
- $250.00 Post and K&E Slide Rules + Books, Parts
- $59.99 Vintage Keuffel & Esser K&E 4092-3 Log Log Duplex Decitrig Slide Rule + N902-T
- $29.95 KEUFFEL & ESSER K & E 9068 DORIC DUPLEX SLIDE RULE W. LEATHER CASE, 6-5/8" LONG
- $9.47 K & E 4054 Slide Rule Keuffel & Esser Leather Case Vintage
- $20.00 Vintage Keuffel & Esser Co. K&E DORIC Slide Rule w/Leather Case USA 13"
- $64.99 Vintage Keuffel & Esser Co. K&E Slide Rule 4083-3 With Leather Case & Belt Clip
- $29.95 Keuffel & Esser K&E 4081-3 Log Duplex Decitrig Slide Rule W/ Case free shipping
- $35.00 Keuffel & Esser Co. K&E 4181-1 Slide Rule 7" With Pouch USA 🇺🇸 1947
- $26.00 K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule + Black Case
- $36.50 Keuffel & Esser K&E 4081-3 Slide Rule - Log Log Duplex Decitrig - Made In USA
- $19.50 Vintage Keuffel & Esser K+E Slide Rule 4053-3 Hard Leather Case, 10 1/2”
- $40.00 Vintage Keuffel & Esser Co. K&E Slide Rule 4083-3 With Leather Case Made in USA
- $119.95 Vintage 1950s K&E Keuffel Esser Model 4081-3S Slide Rule W/Box, Case and Manual.
- $399.99 Keuffel & Esser K&E 20-inch "Mystery" Slide Rule w/ side K scale- Serial #924660
- $37.60 Vintage Keuffel & Esser K&E N4083-3 Log Log Duplex Decitrig Slide Ruler and Case
- $34.99 Vintage K&E Polyphase Duplex Scientific Slide Rule W/Original Case 249897 USA
- $19.99 Vintage Keuffel & Esser K+E Slide Rule 4053-3 Polyphase With Box Sheath
- $99.00 Deci-lon 10" Slide Rule With Original K&E Case Nice Condition Clean
- $49.99 VINTAGE K&E EVER THERE SLIDE RULE 1936 With Box And Papers 4097B
- $39.99 Vintage K&E Keuffel Esser Model 4081-3S Slide Rule W/ Leather Case & Box
- $44.97 Vintage K&E Keuffel & Esser Model 4081-3 Slide Rule with Case Copyright 1947
- $33.82 Keuffel & Esser K&E Log Log Duplex 4083-3S Slide Rule Vintage No Name 2nd Rule
- $39.88 K & E Keuffel & Esser Vintage Slide Rule Model No. 481-3 Leather Case, 1947, USA
- $84.99 Keuffel & Esser 4045 - Scarce K&E 16-inch Slide Rule - Serial #46590 Circa 1924
- $39.60 B18 K&E Keuffel & Esser 4053-5 Slide Rule with Leather case
- $65.00 Vintage Keuffel Esser K&E 20" Slide Rule 4053-5, 68-1607 Green Leather Case Rare
- $69.99 Keuffel & Esser 4045 - Scarce K&E 16-inch Slide Rule - Circa 1924 Serial #161695
- $148.95 Keuffel & Esser Slide Rule 68-1497 Polyphase Decitrig Duplex w/ Leather Case K&E
- $39.00 K&E Slide Rule Model N4081-3, Vintage Bamboo
- $79.90 Doric K & E Co 1947 Slide Rule With Leather Case
- $56.24 Keuffel & Esser K&E 4081-3 Log Log Duplex Decitrig & Leather Case Trigonometric
- $34.99 1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA Leather Case
- $110.00 K E Log Log Duplex Decitric Slide Rule 4081 3S Mint w Leather Case, Box, Manual
- $47.99 Vintage 1947 K&E Keuffel Esser Model 4081-3S Slide Rule Log Duplex Decitrig Case
- $22.00 Vintage Keuffel & Esser K+E Slide Rule #68-1210 Log Log Duplex Decitrig c.1947
- $285.00 Keuffel & Esser 68 1100 DECI-LON 10 Slide Rule w/Leather Case + Instruction Book
- $14.95 K&E Keuffel & Esser Co. 1947 4081-3 Log Log Duplex Decitrig Slide Rule w/ Case
- $89.49 Vintage K&E 12.5 inch slide rule with original case 29062
- $34.96 vintage Slide Rule: K & E 9061-1 Doric, 012598 Pacific Pumps, inc.
- $36.00 K&E 4070-3 Log Log Duplex Trig Slide Rule with Leather Case Manual Box Nice! AA
- $24.99 K&E Keuffel & Esser 4088-3 Log Duplex Decitrig Slide Rule With Leather Case
- $14.95 K&E No. 4081 Manual Log Log Duplex Decitrig Slide Rule Keuffel & Esser
- $100.00 K&E 68 1100 Slide Rule w/ Leather Case Keuffel & Esser Deci Lon 10
- $25.99 Vintage Keuffel & Esser K+E Slide Rule 4053-3 Polyphase Leather Box Made in USA
- $29.99 K+E Vintage Ivorite Slide Rule With Leather Sheath, USA
- $9.00 Vtg 1947 K&E Log Log Duplex Decitrig Slide Rule #4081 MANUAL ONLY * Orange Cover
- $725.00 K & E Thacher's Cylindrical Slide Rule and Calculating Instrument 4012
- $11.97 Slide Rule Replacement Cursor Glass for K&E 4088-3, 4088-2, 4095-3
- $19.95 Vintage Keuffel & Esser Co. N. Y. 4054 Slide Rule Leather Case
- $17.99 Vintage Keuffel & Esser Co K&E 4053-3 w/Leather Case & Sterling Slide Rule
- $74.99 Keuffel & Esser 4035 - K&E 8-inch Slide Rule w/ Metal Framed Cursor - Pre-1915
- $23.99 Vintage Keuffel & Esser Co. K-12 Prep K + E Slide Rule #681892 W/ Case
- $21.99 early 1930's K+E Slide Rule N4053-3 Brown Leather Case Keuffel Esser Engineering
- $25.99 Vintage Keuffel & Esser K&E N4053-3 10" Long Slide Rule w/ Case VTG U.S.A. READ
- $9.95 Vtg K & E Manual Log Log Duplex Decitrig Slide Rule Manual N4081 Keuffel Esser
- $46.99 1947 K&E Keuffel Esser Log Log Duplex Decitrig Slide Rule 4081-3S w/Case, Manual
- $18.00 K&E Keuffel & Esser 4092 Slide Rule
- $67.89 Keuffel Esser KE Slide Rule 4081-3 Log Log Duplex Decitrig Leather Case Box USA
- $395.00 VTG RARE 1947 K&E Slide Rule 4081-3 LOG LOG DUPLEX DECITRIG KEUFFEL & KESSER CO.
- $28.95 Lutz 252, N4058W, K&E 4058W Slide Rule LOT 5 & Leather Case Vintage
- $9.99 Vintage K & E Beginner's Slide Rule Ruler Wooden 4058W W/Case
- $140.00 K&E Keuffel & Esser 4088-5 20 inch Duplex Slide Rule AGC lot 66, 100+ years old
- $8.50 K&E KEUFFEL & ESSER SLIDE RULE 12" 4092-3 Read note
- $24.99 Vintage SLIDE RULE: K & E N4058W Original Sleeve
- $12.97 Slide Rule Indicator Window Glass for K&E 4031
- $74.95 Keuffel & Esser K+E Slide Rules Deci-Lon An Instruction Manual Hardcover
- $15.00 Vintage Keuffel Esser Slide Rule 4080-3 Log Log Duplex Trig Made in US K & E
- $18.99 Keuffel & Esser Vintage Slide Ruler K&E Slide Rule Leather Case 4150-1
- $19.99 Keuffel and Esser K&E 4081-3 Log Log Duplex Decitrig Slide Rule with Case
- $8.50 KEUFFEL & ESSER LOGO ENAMEL LAPEL PIN & DECAL SET K+E SLIDE RULE
- $33.00 B18 K&E Keuffel & Esser 4092-3 Slide Rule with Leather case
- $34.95 Keuffel & Esser K+E Slide Rule 4081-3 Log Log Duplex Decitrig 1947 Leather Case
- $14.95 Vintage K+E Manual. Log Log Duplex Decitrig Slide Rule No. N4081.
- $23.98 Vintage Keuffel Esser KE Slide Rule N4081-3 Log Duplex DeciTrig with Case
- $12.95 VTG K&E Log Log Duplex decitrig Slide rule pamphlet sales brochure 1950's ad
- $10.00 Vintage Slide Rule: K & E 4097B / 4097 B in Leather case, cracked AS-IS K&E
- $12.65 VINTAGE KEUFFEL & ESSER (K&E) N4088-3 SLIDE RULE & CASE - MISSING CURSOR
- $5.00 K&E Keuffel & Esser VTG Slide Rule N4056-3 MISSING CURSOR
- $14.99 GENUINE K&E LOG LOG DUPLEX DECITRIG SLIDE RULE N8041 ORIGINAL MANUAL CIRCA. 1943
- $20.00 Vintage K&E N4053-5 20 Inch Slide Rule In Case
- $26.00 KEUFFEL & ESSER SLIDE LOG LOG DUPLEX DECITRIG 68 1210 SLIDE RULE K&E K+E & Case
- $9.99 VTG KEUFFEL & ESSER (K&E) Beginner's Slide Rule Ruler Wooden 4058W 4058 W w/Case
- $49.95 VTG 1952 K+E Keuffel & Esser 4161-1 Slide Rule With Original Case Instructions
- $36.95 K&E Slide Rule Keuffel & Esser N4081-3 Log Log Duplex Decitrig Leather Case 1947
- $38.47 Keuffel & Esser K+E 4081-3 Slide Ruler Drafting Vintage Leather Case/book READ*
- $29.00 Vintage K & E Keuffel & Esser Co. N. Y. 4054 Slide Rule Leather Case Drafting
- $12.59 VTG K & E #4183B BELT CARRIER FOR SLIDE RULE CASES *BOX & PAPERWORK ONLY*
- $16.00 Keuffel & Esser K&E 4053-3 Slide Rule With Leather Case - Made In USA
- $39.95 K&E Keuffel & Esser Log Log Duplex Decitrig SLIDE RULE Leather Case N4081-3 Box!
- $24.99 Keuffel & Esser Co.(K & E) No. 4181-3 Log Log Duplex Decitrig Slide Rule & Case
- $25.00 Vintage K & E Keuffel & Esser Co. N. Y. 4054 Slide Rule with Leather Case
- $25.00 Keuffel & Esser K&E 4081-3 Log Log Duplex Decitrig Slide Rule With Case 1958
- $40.00 VTG RARE 1947 K&E Slide Rule 4081-3 LOG LOG DUPLEX DECITRIG KEUFFEL & KESSER CO.
- $64.99 K&E Keuffel & Esser Slide Rule with Black Leather Case Model 4181-1 - Very Nice
- $9.99 K&E Keuffel & Esser 4058-C Beginners Slide Rule with box case
- $15.00 Vintage Keuffel & Esser KE SLIDE RULE #4055 w/Hard Case Early 20th Century
- $24.49 Vintage K&E Keuffel & Esser Model 4053-3 Slide Rule with Leather Case
- $39.00 Vintage 1947 Keuffel & Esser K&E Log Log Duplex Decitrig Slide Rule Leather Case
- $49.99 K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule c1947