Bras sector by George Adams, 1756-1760.

Hills, Jennie

Bras sector by George Adams, 1756-1760.
3 4 c m
40cm
actual image size: 32cm x 26cm

Description

A nine inch bras sector, by George Adams; engraved 'Improv'd and made by Geo. Adams, Mathm. Inst. Maker to His Royal Highnes, George Prince of Wales, London'. Sectors were used in calculations involving proportion. They are composed of two flat arms hinged together that can be adjusted to form any angle. Each arm is engraved with logarithmic and trigonometrical lines, which radiate from the centre of the hinge.

Image Details

Artist
 
Image Ref.
 
10328297

© Science Museum / Science & Society Picture Library

buy a print

Select size
 
Select finish
 
How many prints?
 
£20.00
 

buy a framed print

buy a canvas

buy a framed canvas