Whitworth's planing machine, 1877.
2 8 c m
actual image size: 32cm x 20cm

Whitworth's planing machine, 1877.

© Science Museum / Science & Society Picture Library


Plate taken from 'Discoveries and Inventions of the 19th Century' (1877) by Robert Routledge. Joseph Whitworth (1803-1887) established a toolmaking busines in Openshaw, Greater Manchester in 1833, which soon acquired a reputation for high standards of workmanship. He exhibited many tools and machines at the Great Exhibition in London in 1851. Amongst Whitworth's achievements were the devising of a system of precision measurement which, using a precision flat plane and measuring screw, was accurate to a millionth of an inch, and the development of a standard system for screw threads. The latter, which still bears Whitworth's name, was adopted by Britain's railway companies and later became established as a British Standard.

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