- Subject
- Surveying
- Item type
- Object
- Provenance
- Lent by Christ Church, Oxford in 1925.
- Physical material
- Copper Alloy
- Dimensions
- Width: 141mm
- Inventory No
- 18184
- Accession Number
- 1925-43
Description
Copper alloy ball and socket joint associated with the plane table with alidade, by John Worgan, c. 1696.
The socket has a wing nut for attaching to a tripod or staff, and a ring head screw for tightening the ball.
It is similar in form to the joint on the Thomas Wright drainage level - see Inv. No. 43707.
