Mining compas in engraved ivory case, Italian, 17th century.

 
Mining compas in engraved ivory case, Italian, 17th century.
4 0 c m
 
31cm
actual image size: 23cm x 32cm

Description

Magnetic compases are portable and easy to use for rapid survey where high accuracy is not required. Particularly useful in mines, the compas could be hung on a hemp rope stretched along the mine gallery and the compas points used to call the direction of mineral veins.

Image Details

Image Ref.
 
10280160

© Science Museum / Science & Society Picture Library

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