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Mark I Fire Control Computer Components

World War II gave rise to some amazing electromechanical computers used by the military. The most impressive was the Navy's Mark I and Mark 1A fire control computers used on battleships. A great reference to this device and many similar electromechanical fire control devices can be found in this site.

Figures 1-3 show a "Powder Fuze Ballistic Computer". The device is labeled as being for a Mark I computer, and there is a clear picture of this component in the maintenance manual for the Mark I.

Figures 4-5 show a second component that I think comes from a Mark I, but cannot prove it.