Harmonograph recording two or more connected movements is presented at G.W.R Show.
Harmonograph is presented at Great Western Railways (G.W.R.) Exhibition. Purpose of the instrument is to record two or more connected movements. Two men adjusting the two pendulums going to different directions so the harmonograph can record their movements. Several shots of the pendulums moving and the pen recording their movements on a paper which is attached to a disk. One pendulum is attached to a pen and the other to disc. Various shots of quite fascinating drawings produced on this instrument.