F.309 Data Sheet MJS-p-0292

Richardson, Model of 1917, 1917-1918

Serial Number or Date Stamp:

Country: USA Primary construction material: wd Case included?: no

General Description: Specialty linear military slide rule

Length of 1 decade = 17 in, and overall scale length = 17 in. The largest physical dimension is 18 in.

Front Scales: A(yds/meters) [ B(SI/mils) C(SI/mils) ] D(yds/meters)

Back Scales: [ B(SI/mils) C(SI/mils) ]

Notes: WW I military slide rule for ranging calculations; mahogany on brass; described in Richardson’s Slide Rule Simplified, 6th Ed.; made for J.H. Weil & Co., Phila.

References: Richardson, The Slide Rule Simplified, Sixth Edition. p90, 1918; https://www.sliderulemuseum.com/Manuals/M31_Richardson_TheSlideRuleSimplified.pdf, https://sliderulemuseum.com/Richardson.htm

Date Acquired: 02/15/2023