Rectangular protractor, late 18th century.

Image number: 10328089

Rectangular protractor, late 18th century.

A brass rectangular protractor, made by Dollond of London. As well as the usual angular scale the instrument contains a diagonal scale for plotting distances on a map or plan.

Image number:
10328089
Credit:
Science Museum/Science & Society Picture Library
Date taken:
20 October 2003 19:09
Image rights:
Science Museum