$14.9

Vintage New Old Stock Sterling Pocket Metric Converter Plastic Ruler

$40.45

Lufkin Rule Co Tool Screw Thread Calculator Round Slide Rule Tap Drill 1935 9B

$28

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

$39.99

Vintage Keuffel & Esser 1947 K&E 4081-3 Slide Ruler w/ Orange Leather Case

$62.99

Vintage K+E Slide Rule Leather Case Classic Collectible Scientific Instrument

$20

Vintage Sterling Precision Slide Rule, 11" L W/Case & Instructions, Made in USA.

$14.5

Vintage Slide A Rule for Meetings 1955 Marjorie H Duncan

$23

1959 PICKETT Model N1010-ES TRIG

$25

Heath's Chem-Formulator [1950 Edition]

$90

LARGE LOT VINTAGE SLIDE RULE Dietzgen, Post, Lawrence ETC

$14.99

Vtg STERLING Percision 11" Slide Rule, Instructions & Case-Sterlings Plastic Co.

$19.99

Frederick Post slide rule 1452W w/ Case Hemmi Japan Ruler White Vintage NOS