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Two Vintage Log Log Slide Rules: K+E & Pickett + Eckel
Two Vintage Log Log Slide Rules: K+E & Pickett + Eckel

$36.00

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Keuffel & Esser K&E Log Log Duplex 4080-3Slide Rule Vintage W/ Leather Case
Keuffel & Esser K&E Log Log Duplex 4080-3Slide Rule Vintage W/ Leather Case

$29.99

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K&E Kueffel & Esser Log Log Duplex Deoitrig Slide Rule 4081-3 S.M. Rising
K&E Kueffel & Esser Log Log Duplex Deoitrig Slide Rule 4081-3 S.M. Rising

$18.00

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K& E Slide Rules Instruction Manual jet-log Log log duplex decitrig 1955
K& E Slide Rules Instruction Manual jet-log Log log duplex decitrig 1955

$24.00

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Vintage 1950s K&E 4081 Slide Rule Manual Log Log Duplex Decitrig Original Guide
Vintage 1950s K&E 4081 Slide Rule Manual Log Log Duplex Decitrig Original Guide

$5.99

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K& E Slide Rules A Self Instruction Manual jet-log Log log duplex decitrig 1955
K& E Slide Rules A Self Instruction Manual jet-log Log log duplex decitrig 1955

$27.99

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Vtg K&E Keuffel Esser Co Log Log Duplex Decitrig Slide Rule 4081-3S Leather Case
Vtg K&E Keuffel Esser Co Log Log Duplex Decitrig Slide Rule 4081-3S Leather Case

$52.99

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VTG K&E Keuffel Esser Model 4081-3S Log Duplex Slide Rule w/ Leather Case & Box
VTG K&E Keuffel Esser Model 4081-3S Log Duplex Slide Rule w/ Leather Case & Box

$39.99

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K&E LOG LOG DUPLEX DECITRIG SLIDE RULE 4081 ORIGINAL MANUAL VINTAGE 1945 BOOK
K&E LOG LOG DUPLEX DECITRIG SLIDE RULE 4081 ORIGINAL MANUAL VINTAGE 1945 BOOK

$15.00

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Vintage 1940s KEUFFEL & ESSER 4080-3 Log Log Duplex Trig SLIDE RULE Leather Case
Vintage 1940s KEUFFEL & ESSER 4080-3 Log Log Duplex Trig SLIDE RULE Leather Case

$29.99

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1947 K&E Keuffel Esser Log Log Duplex Decitrig Slide Rule 4081-3S w/Case, Manual
1947 K&E Keuffel Esser Log Log Duplex Decitrig Slide Rule 4081-3S w/Case, Manual

$28.99

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1940's K&E Log Log Duplex Decitrig Slide Rule 4081-3 Leather Case Keuffel Esser
1940's K&E Log Log Duplex Decitrig Slide Rule 4081-3 Leather Case Keuffel Esser

$89.00

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VTG 1940s K + E Keuffel & Esser Log Log Duplex Decitrig Decimal Log Slide Rule
VTG 1940s K + E Keuffel & Esser Log Log Duplex Decitrig Decimal Log Slide Rule

$69.99

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K&E Keuffel & Esser Co. 1947 Log Log Duplex Vector Slide Rule 4080-3 w/Manual
K&E Keuffel & Esser Co. 1947 Log Log Duplex Vector Slide Rule 4080-3 w/Manual

$61.19

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1947 K&E Keuffel & Esser 4081-3 Log Log Duplex Slide Rule w/ Case w/Manual
1947 K&E Keuffel & Esser 4081-3 Log Log Duplex Slide Rule w/ Case w/Manual

$99.44

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Vintage Keuffel & Esser K&E N4081-3 Log Log Duplex Decitrig Slide Ruler
Vintage Keuffel & Esser K&E N4081-3 Log Log Duplex Decitrig Slide Ruler

$49.00

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K&E Log Log Duplex Decitrig Slide Rule with Leather Case Keuffel & Esser USA
K&E Log Log Duplex Decitrig Slide Rule with Leather Case Keuffel & Esser USA

$28.99

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VTG K&E Keuffel & Esser Co Log Log Duplex Slide Rule 681210 1947 Plus Case Rare!
VTG K&E Keuffel & Esser Co Log Log Duplex Slide Rule 681210 1947 Plus Case Rare!

$39.95

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1947 Keuffel & Esser Co. Log Log Duplex Vector Slide Ruler Orange Case N4081-3
1947 Keuffel & Esser Co. Log Log Duplex Vector Slide Ruler Orange Case N4081-3

$24.99

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Vintage 1950s K&E Keuffel & Esser Log Log Duplex Vector Slide Rule 4083-3 CASE
Vintage 1950s K&E Keuffel & Esser Log Log Duplex Vector Slide Rule 4083-3 CASE

$29.97

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K&E Log Log Duplex Trig Slide Rule- 1943, No 4080
K&E Log Log Duplex Trig Slide Rule- 1943, No 4080

$5.00

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Vintage 1947 K & E Slide Rule 4081-3S Log Log Duplex Decitrig Slide Rule OG Box
Vintage 1947 K & E Slide Rule 4081-3S Log Log Duplex Decitrig Slide Rule OG Box

$152.99

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VINTAGE K&E LOG LOG SLIDE RULE WITH PICKETT INSTRUCTION BOOK AND PROTRACTOR SET
VINTAGE K&E LOG LOG SLIDE RULE WITH PICKETT INSTRUCTION BOOK AND PROTRACTOR SET

$7.00

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Vtg K&E Log Log Duplex Decitrig 4081-3S Slide Rule With Leather Case Box Manual
Vtg K&E Log Log Duplex Decitrig 4081-3S Slide Rule With Leather Case Box Manual

$74.99

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GENUINE K&E LOG LOG DUPLEX DECITRIG SLIDE RULE 4081 ORIGINAL MANUAL VINTAGE 1945
GENUINE K&E LOG LOG DUPLEX DECITRIG SLIDE RULE 4081 ORIGINAL MANUAL VINTAGE 1945

$19.99

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K & E 4081-3S LOG LOG DUPLEX DECITRIG KEUFFEL & ESSER SLIDE RULE W/LEATHER CASE
K & E 4081-3S LOG LOG DUPLEX DECITRIG KEUFFEL & ESSER SLIDE RULE W/LEATHER CASE

$29.99

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Keuffel & Esser K&E Log Log Duplex Decitrig Slide Rule 4081-3 Orig. Leather Case
Keuffel & Esser K&E Log Log Duplex Decitrig Slide Rule 4081-3 Orig. Leather Case

$27.99

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Keuffel & Esser K & E 4080-3 Log Log Duplex Trig Slide Rule W/ Case USA Vintage
Keuffel & Esser K & E 4080-3 Log Log Duplex Trig Slide Rule W/ Case USA Vintage

$34.99

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Vtg Rare 1947 K&E Slide Rule 4081-3 LOG LOG DUPLEX DECITRIG KEUFFEL & KESSER CO.
Vtg Rare 1947 K&E Slide Rule 4081-3 LOG LOG DUPLEX DECITRIG KEUFFEL & KESSER CO.

$89.85

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Vintage Keuffel & Esser KE 4081-3 Log Log Duplex Decitrig Slide Rule Case Box
Vintage Keuffel & Esser KE 4081-3 Log Log Duplex Decitrig Slide Rule Case Box

$46.00

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VINTAGE KEUFFEL & ESSER (K&E) N4081-3 SLIDE RULE LOG LOG DUPLEX DECITRIG
VINTAGE KEUFFEL & ESSER (K&E) N4081-3 SLIDE RULE LOG LOG DUPLEX DECITRIG

$15.59

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Vtg Keuffel & Esser 4181-3 Ivorite Slide Rule Log Log Duplex Decitrig Made USA⭐️
Vtg Keuffel & Esser 4181-3 Ivorite Slide Rule Log Log Duplex Decitrig Made USA⭐️

$48.89

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Vintage Keuffel Esser Slide Rule 4081-3S Log Log Duplex Decitrig Leather Case
Vintage Keuffel Esser Slide Rule 4081-3S Log Log Duplex Decitrig Leather Case

$35.00

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K&E SLIDE RULE LOG LOG DUPLEX 68 1287 w LEATHER CASE & INS BOOKLET & BOX rqqr
K&E SLIDE RULE LOG LOG DUPLEX 68 1287 w LEATHER CASE & INS BOOKLET & BOX rqqr

$55.00

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Keuffer & Esser K&E Log Log Duplex Decitrig Slide Rule 4081-3S in Leather Case
Keuffer & Esser K&E Log Log Duplex Decitrig Slide Rule 4081-3S in Leather Case

$39.00

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Vintage 1947 Keuffel Esser K&E 4081-3 Log Log Duplex Decitrig Slide Rule w/Case
Vintage 1947 Keuffel Esser K&E 4081-3 Log Log Duplex Decitrig Slide Rule w/Case

$8.97

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K&E 68 1318 Engineering Science Slide Rule LOG LOG DUPLEX TRIG & Leather Case
K&E 68 1318 Engineering Science Slide Rule LOG LOG DUPLEX TRIG & Leather Case

$149.95

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Keuffel & Esser K&E Log Log Duplex Decitrig Slide Rule 4081-3 Orig. Leather Case
Keuffel & Esser K&E Log Log Duplex Decitrig Slide Rule 4081-3 Orig. Leather Case

$32.09

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K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule c1947
K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule c1947

$49.99

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VINTAGE KEUFFEL & ESSER (K&E) N4081-3 SLIDE RULE LOG LOG DUPLEX DECITRIG
VINTAGE KEUFFEL & ESSER (K&E) N4081-3 SLIDE RULE LOG LOG DUPLEX DECITRIG

$90.00

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Keuffel & Esser 4081-3S Log Log Duplex Decitrig Slide Rule w/ Leather Case & Box
Keuffel & Esser 4081-3S Log Log Duplex Decitrig Slide Rule w/ Leather Case & Box

$77.87

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K E Log Log Duplex Decitric Slide Rule 4081 3S Mint w Leather Case, Box, Manual
K E Log Log Duplex Decitric Slide Rule 4081 3S Mint w Leather Case, Box, Manual

$89.00

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1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA
1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA

$12.00

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1947 K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule w/ Case USA
1947 K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule w/ Case USA

$52.99

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1947 Keuffel & Esser K&E N4080-3 Log Log Duplex Trig Slide Rule
1947 Keuffel & Esser K&E N4080-3 Log Log Duplex Trig Slide Rule

$14.99

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K + E Manual for Log Log Duplex Decitrig Slide Rule 4187S
K + E Manual for Log Log Duplex Decitrig Slide Rule 4187S

$24.99

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Vtg K&E Keuffel Esser Co Log Log Duplex Decitrig Slide Rule 4081-3S Leather Case
Vtg K&E Keuffel Esser Co Log Log Duplex Decitrig Slide Rule 4081-3S Leather Case

$39.95

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K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule with Leather Case
K&E Keuffel & Esser 4081-3 Log Log Duplex Decitrig Slide Rule with Leather Case

$29.99

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1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA No Case
1947 K&E Keuffel & Esser Slide Rule N4081-3 Log Duplex Decitrig USA No Case

$12.00

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K&E N4081-3 Log Log Duplex Decitrig Slide Rule Bamboo w/ Leather Case LOT 4-417
K&E N4081-3 Log Log Duplex Decitrig Slide Rule Bamboo w/ Leather Case LOT 4-417

$16.00

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1947 Keuffel and Esser K&E 4081-3 Log Log Duplex Decitrig Slide Rule REAd
1947 Keuffel and Esser K&E 4081-3 Log Log Duplex Decitrig Slide Rule REAd

$20.00

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Vintage Keuffel & Esser Co. NY K&E Log Duplex Silde Rule 4081-3 w/ Case
Vintage Keuffel & Esser Co. NY K&E Log Duplex Silde Rule 4081-3 w/ Case

$24.99

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VTG K E LOG LOG DUPLEX DECITRIG SLIDE RULE 1947 4081-3 LEATHER CASE BOX PAPERS
VTG K E LOG LOG DUPLEX DECITRIG SLIDE RULE 1947 4081-3 LEATHER CASE BOX PAPERS

$21.95

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Vtg Keuffel Esser K&E Log Log Duplex Trig Slide Rule 4080-3 w Instructions
Vtg Keuffel Esser K&E Log Log Duplex Trig Slide Rule 4080-3 w Instructions

$40.00

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Vintage K&E Keuffel & Esser Log Duplex Decitrig Slide Rule w/ Case!
Vintage K&E Keuffel & Esser Log Duplex Decitrig Slide Rule w/ Case!

$34.99

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1947 Keuffel & Esser Log Duplex Decitrig 4081-3S Slide Ruler with Case
1947 Keuffel & Esser Log Duplex Decitrig 4081-3S Slide Ruler with Case

$30.06

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1947 Keuffel & Esser (K&E) N4081-3 Slide Rule Log Log Duplex Decitrig
1947 Keuffel & Esser (K&E) N4081-3 Slide Rule Log Log Duplex Decitrig

$16.95

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ACU MATH 1240 Federick Post 1441 Slide Rule LOT K&E Log Duplex Book VTG Computer
ACU MATH 1240 Federick Post 1441 Slide Rule LOT K&E Log Duplex Book VTG Computer

$23.98

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Vtg 1944 K&E Keuffel Esser Model 4081-3S Log Duplex Decitrig Slide Rule Case Box
Vtg 1944 K&E Keuffel Esser Model 4081-3S Log Duplex Decitrig Slide Rule Case Box

$42.99

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K&E 4081 Slide Rule Manual Log Log Duplex Decitrig Keuffel & Esser 1940s
K&E 4081 Slide Rule Manual Log Log Duplex Decitrig Keuffel & Esser 1940s

$12.95

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Keuffel & Esser K&E 4092-3 Log Log Duplex Slide Rule Leather Case Allen P. Bowie
Keuffel & Esser K&E 4092-3 Log Log Duplex Slide Rule Leather Case Allen P. Bowie

$28.00

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Vintage Keuffel & Esser KE 4081-3 Log Log Duplex Decitrig Slide Rule Case Box
Vintage Keuffel & Esser KE 4081-3 Log Log Duplex Decitrig Slide Rule Case Box

$35.99

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K&E Keuffel & Esser Model 4081-3 Log Log Duplex Decitrig 1947 Slide Rule w/ Case
K&E Keuffel & Esser Model 4081-3 Log Log Duplex Decitrig 1947 Slide Rule w/ Case

$34.99

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K&E Keuffel & Esser 4053 Log Log Duplex Decitrig Slide Rule w/ Case
K&E Keuffel & Esser 4053 Log Log Duplex Decitrig Slide Rule w/ Case

$39.99

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Vtg Keuffel & Esser K&E 4081-3 Log Duplex Decitrig Slide Rule Plus Extra Sld Rl
Vtg Keuffel & Esser K&E 4081-3 Log Duplex Decitrig Slide Rule Plus Extra Sld Rl

$25.00

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Keuffel & Esser K & E 4080-3 Log Log Duplex Trig Slide Rule W/ Case USA Vintage
Keuffel & Esser K & E 4080-3 Log Log Duplex Trig Slide Rule W/ Case USA Vintage

$40.04

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1955 KEUFFEL & ESSER LOG LOG DUPLEX DECITRIG SLIDE RULE MANUAL NO.4187S
1955 KEUFFEL & ESSER LOG LOG DUPLEX DECITRIG SLIDE RULE MANUAL NO.4187S

$19.99

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*Vtg 1947 K&E Keuffel Esser Model 4081-3S Slide Rule Log Duplex Decitrig Case
*Vtg 1947 K&E Keuffel Esser Model 4081-3S Slide Rule Log Duplex Decitrig Case

$39.95

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K&E Slide Rule Log Log Duplex Decitrig Leather Case Keuffel & Esse 681210 Ex!!
K&E Slide Rule Log Log Duplex Decitrig Leather Case Keuffel & Esse 681210 Ex!!

$48.00

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Vintage Keuffel & Esser Log Log Duplex Decitrig Slide Rule with Case Read Desc
Vintage Keuffel & Esser Log Log Duplex Decitrig Slide Rule with Case Read Desc

$20.00

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VTG 1947 K&E Keuffel Esser 4081-3S Log Log Slide Rule Box Leather Sheath Manuals
VTG 1947 K&E Keuffel Esser 4081-3S Log Log Slide Rule Box Leather Sheath Manuals

$107.14

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Keuffel Esser KE Slide Rule 4081-3 Log Log Duplex Decitrig Leather Case Box USA
Keuffel Esser KE Slide Rule 4081-3 Log Log Duplex Decitrig Leather Case Box USA

$44.18

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Vintage 1950s K&E Keuffel & Esser Co. Log Log Duplex Vector Slide Rule 4083-3
Vintage 1950s K&E Keuffel & Esser Co. Log Log Duplex Vector Slide Rule 4083-3

$37.00

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Vintage K & E Keuffel & Esser Log Log Decitrig 1947 Slide Rule 4081-3 Case
Vintage K & E Keuffel & Esser Log Log Decitrig 1947 Slide Rule 4081-3 Case

$44.00

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K&E Keuffel & Esser 4080-3 Slide Rule & Case 1947 Log Duplex Trig (read)
K&E Keuffel & Esser 4080-3 Slide Rule & Case 1947 Log Duplex Trig (read)

$18.13

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Keuffel Esser K&E Log Log Duplex Decitrig Slide Rule Leather Case N4081-3
Keuffel Esser K&E Log Log Duplex Decitrig Slide Rule Leather Case N4081-3

$19.99

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Vintage Keuffel & Esser Co. 4081-3 LOG LOG DUPLEX DECITRIG Slide Rule and Case
Vintage Keuffel & Esser Co. 4081-3 LOG LOG DUPLEX DECITRIG Slide Rule and Case

$39.75

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K&E Keuffel Esser No. 4083-3S Slide Rule Leather Case Box Log Log Duplex Vector
K&E Keuffel Esser No. 4083-3S Slide Rule Leather Case Box Log Log Duplex Vector

$40.00

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Keuffel Esser Slide Rule N4081-3 Log Log Duplex Decitrig Leather Case Box 1940s
Keuffel Esser Slide Rule N4081-3 Log Log Duplex Decitrig Leather Case Box 1940s

$35.00

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K&E Keuffel & Esser Model N4083-3 Log Log Duplex 1947 Slide Rule CRACKED CURSOR
K&E Keuffel & Esser Model N4083-3 Log Log Duplex 1947 Slide Rule CRACKED CURSOR

$24.99

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K&E Keuffel & Esser 4080-3 Log Log Duplex Slide Rule 1942 with Case
K&E Keuffel & Esser 4080-3 Log Log Duplex Slide Rule 1942 with Case

$54.95

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Slide Rule VTG K&E Keuffel & Esser Co. 1947 Log Log Duplex Vector 4083-3 READ
Slide Rule VTG K&E Keuffel & Esser Co. 1947 Log Log Duplex Vector 4083-3 READ

$19.99

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Vintage Keuffel Esser KE 4081-3 Slide Rule Log Log Duplex Decitrig Box & Book
Vintage Keuffel Esser KE 4081-3 Slide Rule Log Log Duplex Decitrig Box & Book

$40.49

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K&E Keuffel & Esser 4081-3 Log Log and Bruning 2402 Slide Rule w/ Case 1947 USA
K&E Keuffel & Esser 4081-3 Log Log and Bruning 2402 Slide Rule w/ Case 1947 USA

$28.00

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Keuffel Esser Slide Rule N4081-3S Log Log Duplex Decitrig Case Box 1940s
Keuffel Esser Slide Rule N4081-3S Log Log Duplex Decitrig Case Box 1940s

$29.99

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Vintage K+E Keuffel Esser Co. 68-1210 Log Log Duplex Decitrig Slide Rule c.1947
Vintage K+E Keuffel Esser Co. 68-1210 Log Log Duplex Decitrig Slide Rule c.1947

$54.97

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1947 K&E KEUFFEL & ESSER CO. LOG LOG DUPLEX DECITRIG N1081-3 Slide Rule W/ Case
1947 K&E KEUFFEL & ESSER CO. LOG LOG DUPLEX DECITRIG N1081-3 Slide Rule W/ Case

$19.95

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Vintage Keuffel & Esser K&E N4083-3 Log Log Duplex Decitrig Slide Ruler and Case
Vintage Keuffel & Esser K&E N4083-3 Log Log Duplex Decitrig Slide Ruler and Case

$39.95

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VINTAGE 1947 K+E KEUFFEL ESSER MODEL 4081-3 SLIDE RULE LOG DUPLEX DECITRIG CASE
VINTAGE 1947 K+E KEUFFEL ESSER MODEL 4081-3 SLIDE RULE LOG DUPLEX DECITRIG CASE

$37.04

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Keuffel & Esser Log Log Duplex Slide Rule 1940 Original Manual and Leather Case
Keuffel & Esser Log Log Duplex Slide Rule 1940 Original Manual and Leather Case

$200.00

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Keuffel & Esser K&E Indicator Log Duplex Vector Slide Rule Soroban Abacus Leads+
Keuffel & Esser K&E Indicator Log Duplex Vector Slide Rule Soroban Abacus Leads+

$69.99

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K&E Keuffel & Esser Log Log Duplex Decitrig Slide Rule w/ Case
K&E Keuffel & Esser Log Log Duplex Decitrig Slide Rule w/ Case

$39.99

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1940s K&E Slide Rule Manual No. 4081 Log Duplex Decitrig Keuffel & Esser Booklet
1940s K&E Slide Rule Manual No. 4081 Log Duplex Decitrig Keuffel & Esser Booklet

$15.00

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Keuffel & Esser K+E Slide Rule 68-1210 Log Log Duplex Decitrig 1947 Leather +Box
Keuffel & Esser K+E Slide Rule 68-1210 Log Log Duplex Decitrig 1947 Leather +Box

$25.95

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Keuffel & Esser K&E 4092-3 Log Log Duplex Slide Rule Leather & Case
Keuffel & Esser K&E 4092-3 Log Log Duplex Slide Rule Leather & Case

$19.99

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Vintage Keuffel & Esser K&E 4081 Log Log Duplex Decitrig Slide Ruler and Case
Vintage Keuffel & Esser K&E 4081 Log Log Duplex Decitrig Slide Ruler and Case

$15.00

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1955 K&E SLIDE RULES SELF INSTRUCTION MANUAL log Log Jet Log Decitrig Hardback
1955 K&E SLIDE RULES SELF INSTRUCTION MANUAL log Log Jet Log Decitrig Hardback

$29.00

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Vintage 1947 K&E Keuffel Esser Model 4081-3S Slide Rule Log Duplex Decitrig Case
Vintage 1947 K&E Keuffel Esser Model 4081-3S Slide Rule Log Duplex Decitrig Case

$49.99

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Old 1908 Keuffel & Esser K&E 4088-3 Log Duplex Trig Slide Rule & Case - USA
Old 1908 Keuffel & Esser K&E 4088-3 Log Duplex Trig Slide Rule & Case - USA

$33.59

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Keuffel & Esser K&E N4080-3 Log Log Duplex Trig Slide Rule W/ Brown Leather Case
Keuffel & Esser K&E N4080-3 Log Log Duplex Trig Slide Rule W/ Brown Leather Case

$44.99

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