chronocyclegraph

chronocyclegraph

[‚krän·ō′sī·klə‚graf]
(industrial engineering)
A device used in micromotion studies to record a complete work cycle by taking still pictures with long exposures, the motion paths being traced by small electric lamps fastened to the worker's hands or fingers; time is obtained by interrupting the light circuits with a controlled frequency which produces dots on the film.