F.42 Data Sheet MJS-p-0418

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Cox & Stevens, No. 1066, 1943

Serial Number or Date Stamp: 1942

Country: USA

Primary construction material: pl

Case included?: yes

General Description: Specialty circular aviation slide rule

Length of 1 decade = 5 in, and overall scale length = 5 in. The largest physical dimension is 3.5 in.

Front Scales: speed [ miles/time temp ] alt

Back Scales:

Notes: Intercept Officers Kit Type I; Navigation & Computing instrument plus rulers and calipers; simplified flight calculator concept

References: https://en.wikipedia.org/wiki/Cox_%26_Stevens; https://computarium.lcd.lu/library/PDF/COX_STEVENS_Aircraft_Navigational_Computers_INSTRUCTIONS.pdf

Date Acquired: 04/24/2026