$279

Pickett Circular Slide Rule 111ES

$15

Vintage ~ K&E KEUFFEL ESSER ~ Slide Rule #4081-3 w/K&E Case ~ 12 1/2"

$0.99

Vintage 6" W&G Engineer's Rule Model WG/P20 Australia w/ Leather Clip Case

$10.95

Vintage Keuffel & Esser 1621P Engineers Scale Ruler 3 Sided Triangular Paragon

$17.25

Vintage Pickett Model N1010-T Trig Trigonometry Slide Rule With Leather Case Exc

$19.95

Vintage Pickett Model 903 T Slide Rule Trig Conversion Preowned / Used No Case

$31.2

Vintage Frederick Post (POST) 1460 Versalog Slide Rule w/ Leather Case

$16.88

Vintage Pickett No. 120T Student Slide Rule in Case With Box & Instructions

$9.99

BABY CALCULATOR 7 digit pocket Calculator, w instructions & case S-0221

$4.95

Vintage Sterling Metric Converter

$40

Pressure Reduction Computer Rare Vintage Device

$21.99

Vintage 1986 year Soviet Slide Ruler Logarithmic USSR in Original Case