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6593.jpg
Wood, inlaid with brass wire.

6593.jpg
Wood, inlaid with brass wire.

6593.jpg
Wood, inlaid with brass wire.

6593.jpg
Wood, inlaid with brass wire.

3273.jpg
single circle

7638.jpg
One of three ivory armlets.

7638.jpg
One of three ivory armlets.

6593.jpg
Wood, inlaid with brass wire.

Arnold's compensated escapement - demonstration of his patent No. 1328. A brass escapement on a wooden base
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