Flour calculating slide rule, c 1910.

Richardson, Claire

 
Flour calculating slide rule, c 1910.
4 0 c m
 
31cm
actual image size: 23cm x 32cm

Description

Slide rule used to calculate the price of offal per ton and wheat per quarter at a flour mill. Made by Thomas Robinson & Son Ltd of Rochdale, Greater Manchester.

© Science Museum / Science & Society Picture Library

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