2026/010
Watson’s Azimuth and Time-Proof Plate and Scale
1858
Thomson’s Azimuth and Time-Proof Plate and Scale on heavy card. Booklet with blue cover titled Explanations with Examples for the Azimuth and Time-Proof Plate and Scale. Used by mariners and surveyors.
The plate and scale allows the sun’s true azimuth to be read off at a glance for any altitude throughout the day.
| Acquisition Number | 2026/010 |
|---|---|
| Item Type | |
| Short Description | Azimuth and Time-Proof Plate and Scale |
| Manufactured by | |
| Date of Manufacture | 1858 |
| Sub-items | Booklet with "Explanations with Examples" |
| Supporting Items | None |
| Makers Number | None |
| Marks | None |
| Dimensions (mm) | 370 x 235 |
| Donor | |
| Date Donated | March 2026 |
| Materials | Card |
| Condition | Fair – yellowing |
| Display Location |
