Mayer Viscosity Apparatus

A brass disc of 70mm diameter & 8mm thickness is suspended vertically with the help of steel wire. The central rod has a perpendicular screw with two movable masses on opposite sides, allowing for levelling the disc horizontally.

A small concave mirror is mounted on the rod, and a lamp and scale arrangement are used to project a beam of light, which is reflected by the mirror on to a scale.  This setup allows for determining the viscosity of a liquid by observing the oscillations of the disc and measuring the damping of those oscillations.

The entire system is enclosed in a wooden box with glass panels on the sides. Supplied
complete instrument as above, but without lamp & scale, stop clock, vernier
calliper, screw gauge etc. Includes glass trough