Compound levers, c 1750.
3 4 c m
40cm
actual image size: 32cm x 26cm

Compound levers, c 1750.

© Science Museum / Science & Society Picture Library

Description

This device in the foreground was made by George Adams, instrument maker to the king. A lever, one of the 'simple machines' known since antiquity, enables a heavier load to be lifted using a lighter one. This machine uses a series of three levers so that the weight to be lifted can be sixty times greater than the 'power' required to lift it. The rear instrument is another example of a compound lever, which belonged to Dr Stephen Demainbray (1710-1782), a scientific lecturer of the 18th century.
 

Image Ref.

10191078
 

buy a print

Select size
 
Select finish
 
How many prints?
 
£20.00
 

buy a framed print

buy a canvas

buy a framed canvas