- Subject
- Calculation
- Item type
- Object
- Makers
- Thomas Jones
- Primary inscriptions
- "THOMAS JONES / 62 CHARING CROSS" punched on one side; "DAVID BRIGGS" (presumably the original purchaser) punched on the reverse.
- Physical material
- Ivory and brass
- Object type
- Sector
- Inventory No
- 39877
Description
6 inch radius
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