Tablet sundial, German, 1597.
4 0 c m
 
31cm
actual image size: 23cm x 32cm

Tablet sundial, German, 1597.

© Science Museum / Science & Society Picture Library

Description

This gilt bras folding pocket sundial is oriented by means of its built in compas. The time is shown by the shadow of a tautened string falling upon a scale of hours which surrounds the compas, and the string also shows the time on a vertical scale on the underside of the lid. It indicates Italian hours, Babylonian hours, planetary or Jewish hours, and the sun's position in the ecliptic.
 

Image Ref.

10237592
 

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