(Schlüssel nach du Bois-Reymond)
Description: This switch makes contact by pushing a wire into a
mercury cup and makes this contact very precisely and without the
contact burning, a difficulty which is common to any metal-to-
metal contact in a relay or other switch. (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. 37). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type: component, switch
Stimulus: N/A
System: N/A
Output: N/A