Directions for making an universal meridian dial, capable of being set to any latitude; which shall give the mean solar time of noon, by inspection, without any calculation whatsoever / By Francis Wollaston.
- Wollaston, Francis, 1731-1815.
- Date:
- 1793
Licence: Public Domain Mark
Credit: Directions for making an universal meridian dial, capable of being set to any latitude; which shall give the mean solar time of noon, by inspection, without any calculation whatsoever / By Francis Wollaston. Source: Wellcome Collection.
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