PICKETT & ECKEL Alameda, Calif., Model No. 200 Slide Ruler, Leather Sleeve

K&E Keuffel & Esser Vintage Slide Rule Ruler 10.5" Co. New York, USA

Vintage 1949 Pickett Slide Rule 6 inch Model 300 with Leather Case USA

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

VINTAGE PICKETT 1959 SLIDE RULE W/BLACK LEATHER CASE MODEL 1011-ES

Frederick Post 1460 Versalog Hemmi SLIDE RULE w Leather Case - Bamboo - Japan

VIntage Pickett No 200 Slide Rule-RCA Industrial Tubes-With original case

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