Recording Drums

This is an electrically driven Recording Drum or kymograph, suitable for use by students for lab experiments. These Recording Drums/Kymographs are also used to measure atmospheric pressure, tuning fork vibrations and functioning of steam engines. Its drive mechanism consists of constant speed heavy duty electric motor and an accurate gear box contained in the base together with robust plate clutch. Engagement of various gear ratios are affected by sliding the lever into the slot marked with surface speed or by a knob. Double electric contact arms are clamped on the main spindle and a stout double-contact block is fitted on top of the base. It runs on 220V, AC 50Hz.