Smith and Dolier's arithmetical scales, late 19th century.

Image number: 10327845

Smith and Dolier's arithmetical scales, late 19th century.

These scales were used to set many different sums in addition and subtraction. Pupils in a class would probably have used slates to do the sums.

Image number:
10327845
Credit:
Science Museum/Science & Society Picture Library
Date taken:
30 October 2003 09:16
Image rights:
Science Museum