F.4 Data Sheet MJS-p-0289

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Acu-Rule, Arel G-W Photo, 1946

Serial Number or Date Stamp:

Country: USA

Primary construction material: wd

Case included?: yes

General Description: Specialty linear slide rule

Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.

Front Scales: ASAf [ light SkyType Subject Filter Gamma DepthOfFocus ] DepthOfFocus

Back Scales: [ GE Wabash Blue DepthOfFocus ]

Notes: Goodchild-Whitney (G-W) Photo Slide Rule, with instruction book

References: https://sliderulemuseum.com/Acumath.htm

Date Acquired: 01/30/2023