G06M—COUNTING MECHANISMS; COUNTING OF OBJECTS NOT OTHERWISE PROVIDED FOR
G06M1/00—Design features of general application
G06M1/22—Design features of general application for visual indication of the result of count on counting mechanisms, e.g. by window with magnifying lens
G06M1/24—Drums; Dials; Pointers
G06M1/241—Drums
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Physics & Mathematics
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Engineering & Computer Science
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Theoretical Computer Science
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Storage Of Web-Like Or Filamentary Materials
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