F.243 Data Sheet MJS-p-0126

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Lawrence, 10-C, 1935-1938

Serial Number or Date Stamp:

Country: USA

Primary construction material: wd

Case included?: yes

General Description: Specialty linear ratio/proportion slide rule

Length of 1 decade = 5 in, and overall scale length = 5 in. The largest physical dimension is 5 in.

Front Scales: D [ C Size ] Area

Back Scales:

Notes: Lawrence Engravers / Photographers Proportion Calculator; Wabash, IN

References: http://sliderulemuseum.com/Lawrence.htm; JOS Vol. 5 pp. 55-61

Date Acquired: 08/01/2020