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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Long and Long Scale Slide Rules
Engineers Slide Rule Co. / Scofield-Thacher
The Engineers Slide Rule Co.
USA
Wood/paper
1914-1920
60 cm
General Calculations
Notes:
Although a Duplex long-scale model a better description is two back-to-back Simplex slide rules designed by E.M. Scofield. It intentionally does not have or need a cursor.
Image 1
Image 2
Image 3
Image 4
Image 5
Image 6
Image 7
Image 8
