History of Science Museum: Collection Database Search

Narratives

Orrery Collection ball and socket joint

This ball and socket joint (formerly separately inventoried as Inv 94029) most probably belongs with the plane table by John Worgan - Inv. 18184. The original listing of the Orrery collection includes "A small Plane Table, Ball & Socket, & a brass Index and Sights" (R.T. Gunther, Early Science in Oxford, vol. I (Oxford, 1923), 380).

In the Museum's Collections files there is a photograph which shows the joint juxtaposed with the plane table and the Orrery Collection graphometer (inv. 17420). (The print is marked up for publication and appeared in modified form - with the joint removed and alidade inv. 18184 pasted over - facing p. 374 of Gunther.)

Gunther also illustrates at p. 369 the Worgan circumferentor (inv. 15472) on a tripod, with the same or a similar ball or socket joint as the connection. The tripod (also inv. 15472) should be checked to see if its ball and socket joint is integral.

Other narratives:

Related Objects: