How to Use a Slide Rule, Eugene* Dietzgen Co. -1942 owner's and user's manual F*S import_2021_05_15_235529 This was my Father's 1960

This was my Father's 1960 vintage Durall No

in superb condition as per photos and in perfect working order

It looks like Cocobolo

Restored and Working

measures 19 " long x 7" tall x 7" deep

How to Use a Slide Rule, Eugene* Dietzgen Co. -1942 owner's and user's manual F*S import_2021_05_15_235529 This was my Father's 1960This is a high quality reprint of the Eugene Dietzgen Co. "How to Use a Slide Rule" manual dated 1942. The Slide Rule is an instrument for facilitating calculations and is an indispensable aid not only to the engineer and scientist with their involved problems, but also to the accountant, statistician, manufacturer, merchant, importer, teacher, student, or anyone who has calculations to solve. This is the complete Eugene Dietzgen Co. manual, note that