Specification:
The bath is heated by an immersion heater and the temperature is
controlled with the thermostat at 35 ° +/- 0.5° C. A 6.5mm dia pin is
loaded on the specimen by means of a lever to give a 31.7 Kg weight.
determining the hardness number of Mastic Asphalt for flooring.
It consist of an internally insulated cabinet to the base of which is fitted a water bath having two taps.
A dial gauge 0.01 x 25 mm is provided to record the penetration of pin into the specimen.
