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Locomotion
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Category
Time Measurement
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Maker
General Post Office Research Station, Dollis Hill
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Object type
frequency divider units
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quartz clock equipment
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quartz clocks
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quartz clocks; quartz clock equipment; frequency divider units
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Place
Dollis Hill
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Dollis Hill; London; England
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England
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London
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Quartz crystal clock, 1942.
1942
