The present watch features a standard movement of the Howard Watch Company which was fitted with a one minute tourbillon by A.H. Potter, possibly representing the famed Albert Potter. This example displays Potter's original solution to the problem of changes in frictional dissipation by having the plane of the balance inclined 25% to the plane of the tourbillon.
For another tourbillon watch with inclined balance see R. Walter Prendel, "An Interesting Tourbillon", in the NAWCC Bulletin, 3 (1949), pp. 636-637.
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