Mechanical counting device, c 1900.
- Made:
- circa 1900
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Science Museum Group Collection
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Mechanical counter in decorative metal case
Mechanical counting device, c 1900. Devices for counting the revolutions or repetitive actions of machines were developed from the mid 19th century.
Details
- Category:
- Mathematics
- Object Number:
- 1990-709
- Materials:
- steel (metal)
- Measurements:
-
overall: 15 mm x 160 mm x 45 mm, 0.2 kg
- type:
- revolution counter
- credit:
- Auction Team Koln
