- Subject
- Calculation
- Item type
- Object
- Makers
- Canivet
- Provenance
- Presented by Lewis Evans.
- Primary inscriptions
- "Canivet a La Sphere a Paris. 1762."
- Physical material
- Brass
- Object type
- Astronomical Ring
- Dimensions
- Diameter: 344mm Height: 419mm
- Inventory No
- 68145
- Accession Number
- 1924-0/part
Description
The moveable meridian ring is equipped with both sights and a telescope; the latter would be used when the instrument was used as a mariner's astrolabe or for surveying
The suspension ring is attached to the instrument by a universal joint.
There are vernier scales of use with the latitude and date scales, and the scales of degrees for measuring angular elevations.
