A Micro-Recorder Adapter for Use with Kymographs and Polygraphs
Edward W. Geldreich, Theodore W. Wood · The American Journal of Psychology · 1934
Investigators who have had experience with various recording devices, viz., tambours and other markers, have found difficulty in causing the styluses of such instruments to make proper contact with the paper of kymographs and polygraphs. Recording instruments have been designed to eliminate a part of this difficulty. Such designs usually operate with a cog gear that provides a horizontal or parallel displacement or approach of the recording device to the plane of the paper on the