Labin Instruments Company

Mastic Asphalt Hardness Tester has been fabricated to meet the essential requirements of IS 1195 - 1968 in finding out the Hardness Number of mastic asphalt. Hardness Number is defined as the figure denoting the depth in hundreds of a centimeter, to which a flat ended identation pin in the form of a steel rod 6.35 mm in diameter will penetrate the mastic under a load of 31.7 kg applied for 60 seconds, the temperature being maintained at.