Microtome, 1770.
4 0 c m
 
33cm
actual image size: 25cm x 32cm

Microtome, 1770.

© Science Museum / Science & Society Picture Library

Description

A microtome is used for cutting thin slices of specimen for microscopic investigation. Alexander Cumming, a clockmaker to George III, invented and made this device. The specimen was put in the hole and was presed upwards by a screw. The blade slices the specimen at the top which is then pushed up the required amount by the screw. Although the settings are for 1/500, 1/750 and 1/1000 of an inch, the instrument could not actually achieve this degree of accuracy.
 

Image Ref.

10191188
 

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