Carpenter's slide rule

Carpenter's slide rule, 1825-1860.
Carpenter's 2-foot folding rule in boxwood with logarithmic slide, made by James Rabone & Sons, Birmingham, mid to late 19th century. This is a standard carpenter's rule of the period and includes scales for calculating the volume of wood and the price of a load (50 cubic feet) at various prices per cubic foot.
 
Currently on display in:
Mathematics
Year made :
1861-1917
Inventory number :
1917-83
 

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