Circular slide rule, c 1870.
3 4 c m
40cm
actual image size: 32cm x 26cm

Circular slide rule, c 1870.

© Science Museum / Science & Society Picture Library

Description

A circular slide rule made by Apps. A circular slide rule affords a long and therefore accurate logarithmic line in a small amount of space. The potential of circular rules was not really utilized until the Victorian period, when several spiral and helical designs appeared on the market.
 

Image Ref.

10328304
 

buy a print

Select size
 
Select finish
 
How many prints?
 
£20.00
 

buy a framed print

buy a canvas

buy a framed canvas