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Stanhope square demonstrator, c.1805.

Stanhope square demonstrator, c.1805.

circa 1805
Calculating machine invented by Charles Stanhope

Calculating machine invented by Charles Stanhope

1775
Small trial piece for calculating machine invented by Charles Stanhope in 1777 with case, see Inv. 1872-137, probably made James Bullock.

Small trial piece for calculating machine invented by Charles Stanhope in 1777 with case

1777
Small trial piece for calculating machine invented by Charles Stanhope in 1777, see Inv. 1872-137, probably made James Bullock.

Small trial piece for calculating machine invented by Charles Stanhope in 1777

1777