The demonstration model is used to generate and investigate pure harmonic reciprocating motion. An anodised aluminium disc used as crank is mounted on ball bearings on a mounting board.
This disc has a pointer so that the input angle can be exactly read on the integrated angle measuring scale. The crank pin can be set at different radii on the disc. The slider crank is attached to the crank pin on one side. On the other side the pin is mounted in straight guide that is fitted with a ruler to allow the output stroke to be read off with precision.
An instruction manual and two year warranty are supplied with this apparatus.