Drum calendar timepiece with detachable alarm

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Drum calendar timepiece with detachable alarm
Manufacturer	(unknown)
Production years	1600
Production location	(unknown)

This timepiece dates from about 1600, and has a verge escapement with a balance-wheel: the balance-spring is a later addition.

[edit] How it works

It is provided with an hour-hand and a shorter hand which indicates the date of the month on a scale reading from 1 to 31. There is no special provision for the shorter months. The separate alarm mechanism is clipped on to the top of the clock and the alarm lever is tripped by the hour-hand.

[edit] Memories

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[edit] In the Science Museum's Records

Inv. No: 1953-379