TitleCircular slide rule case
Dimensionsoverall: 1/8 in x 3 1/2 in x 3 1/2 in
Description"Concise" is stamped into the front of the case. Printed in gold on the back of the case is "Otis Engineering Corporation Dallas, Texas, U.S.A."
CreditGift of Mike Konshak
|102631413||Circular slide rule|