Description
Optical square in brass.
See Image 3 for a short description on how to use an optical square.
Optical Square
2017/005
Optical square in brass
c.1880
Additional information
| Acquisition Number | 2017/005 |
|---|---|
| Item Type | |
| Short Description | Optical square in brass |
| Manufactured by | |
| Date of Manufacture | c. 1880 |
| Sub-items | None |
| Supporting Items | None |
| Makers Number | None |
| Marks | None |
| Dimensions (mm) | 60 (dia) x 29 |
| Donor | |
| Date Donated | February 2017 |
| Materials | Brass and silvered glass |
| Condition | Poor to fair. Silvering on glass has deteriorated. |
| Display Location |
