Vintage Lawrence Engineering Service Wooden Slide Rule with Case

Vintage Lawrence Engineering Service Wooden SLIDE RULE w/ Original Box Peru, IN

Vintage LAWRENCE ENGINEERING SERVICE Small Wooden 8" SLIDE RULE

Vintage Lawrence Engineering Service 10-B Slide Rule, 1940s

Vintage Lawrence Engineering Service Deluxe Slide Rule, original box Made in USA

Slide Ruler Lawrence Engineering Service Wooden Slide Rule W/ Box USA 1938-1947

Vintage Lawrence Engineering Service Wooden Slide Rule w/leather case 250-BT

SLIDE RULE. LAWRENCE ENGINEERING SERVICE Wabash IND. 8 3/8". Wood. Vintage