Simple contact-clock

(Einfache Kontaktuhr)
Description: This is a weight-driven clock with the pendulum adjusted to 1/2 second cycles. The total time is registered on the face and a pendulum-connected lever makes alternating contact with mercury pot contacts. (Expanded caption Copyright 1998, Edward J. Haupt)
(Source: None given.)
Source of illustration: Zimmermann, E. (1903). XVIII. Preis- Liste über psychologische und physiologische Apparate (p. 52). Leipzig: Eduard Zimmermann.

DESCRIPTORS:
Type: component, timing, response
Stimulus: N/A
System: N/A
Output: total time, contact closure

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