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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
Robson / Timber
F. Robson & Co.
UK
Wood/brass
1900s
60 cm
Business
Notes:
Duplex model for calculating the volume of finished boards and unfinished logs. Results are in cubic feet because that was the unit of the day for timber merchants.
Image 1
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Image 6
Image 7
Image 8
Image 9
