'Plus' calculating machine, c 1955.

Richardson, Claire

'Plus' calculating machine, c 1955.
3 1 c m
40cm
actual image size: 32cm x 23cm

Description

A mechanical hand calculator made by Bell Punch Company Limited, a later variant of the popular German Brunsviga lever-operated calculator. Key driven adding and calculating machines were widely used in accounting and business until the late 1970s when they were replaced by electronic calculators.

Image Details

Artist
 
Image Ref.
 
10433509

© Science Museum / Science & Society Picture Library

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