(Mareyscher Tambour.)
Description: This, as No. 340, has a 5 cm (i.e., large) air
capsule to drive the writer, which permits wide movement (2-14 mm
distance). This can be turned around its attachment point to
permit closer placement of the writing point. A micrometer screw
(M) allows precise adjustment. The moveable membrane element of
the air-capsule can be replaced. This device converts changes in
air pressure into movements of a stylus that scribes a kymograph.
(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. 96). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type: Component
Stimulus: Air pressure
System:
Output: Bristle movement