PICKETT & ECKEL INC MODEL 2 SCIENTIFIC SLIDE RULE DECI 1947 WITHOUT CASE [AI]

1949 Pickett & Eckel Slide Rule with Leather Case Model 4 Vector Hyperbolic dl

Pickett & Eckel Inc Slide Rule Model 2 Made USA 1947 Engineering Deci Log Log

PICKETT& ECKEL 271 Slide Rule Model N1010-T TRIG with Leather Case

Vintage 1947 PICKETT ECKEL Model 4 Slide Rule Vector Type & Case USA Engineering

Pickett & Eckel Slide Rule Deci Log Log Model 3 w/ Case - 1947

Vintage Pickett & Eckel Slide Rule Model 800 Synchro Scale with Leather Case 10"

Vintage 1947 PICKETT ECKEL Model 4 Slide Rule Vector Type & Case USA Engineering