(Doppel-Markiermagnet)
Description: This is an event marker (somewhat like the later
Gerbrands recorder) which is designed to place two different
signal pulse-initiated marks on a kymograph. The magnets are held
in position by an adjustable spring. A current causes them to
move upward, thus changing the position of the pen until the
current is ended. (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. 49). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type: component, timing, response
Stimulus: N/A
System: N/A
Output: event mark