Portable sundial and perpetual calendar

Made:
1693 in Germany
Portable sundial and perpetual calendar

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Portable sundial and perpetual calendar
Science Museum Group
© The Board of Trustees of the Science Museum

Portable sundial and perpetual calendar, by Johann Henrich Börner, Germany, 1693.

Details

Category:
Time Measurement
Object Number:
1938-337
Materials:
bronze (copper, tin alloy)
Measurements:
overall: 3 mm 64 mm, .055kg
type:
sundial and perpetual calendar
credit:
Sir Richard Powell