Joshua Routledge, English instrument-maker.
4 0 c m
 
32cm
actual image size: 24cm x 32cm

Joshua Routledge, English instrument-maker.

© Science Museum / Science & Society Picture Library

Description

Joshua Routledge developed a 12 inch bras slide in the early 1800s that contained the logarithimic scales with an ordinary 2 fold 2 foot rule.
 

Image Ref.

10302590
 

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