Mechanical counting device, c 1900.

Made:
circa 1900
Mechanical counter in decorative metal case

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Mechanical counter in decorative metal case
Science Museum Group Collection
© The Board of Trustees of the Science Museum

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