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Details and Image
Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
Post (Hemmi) / Pre-WWII 1458
Post (Hemmi)
Japan
Celluloid over bamboo
late 1930's
25 cm
Engineering
Notes:
"The pre-war Post 1458, made by Hemmi, is a duplex slide rule that takes advantage of the extra real estate to add DF, CF, and CIF scales to the basic Rietz scale set. "
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Image 6
Image 7
