Picture No | 10052549 |
Date | BC/AD |
Description | Roman Polos |
Details |
The ancient Roman POLOS, or HELIOTROPION, is a staff standing in a basin, time being measured by the movement of the shadow from one point to another
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Source | cigarette card by an unnamed artist in Morris's series 'Measurement of Time' (1924) |
Credit | Mary Evans Picture Library |
Restrictions |
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