Deval Abrasion Testing Machine designed by Lab Cart is used for the determination of resistance of aggregate to wear by abrasion. This machine is provided with two hollow cylinders, closed at one end and provided with tightly fitting covers at the other end. The inner diameter of the cylinder 20 cms and 34 cms depth. The cylinders are mounted on a shaft at an angle of 30° with the axis of rotation. The shaft is fabricated to rotate at 30-33 rpm through a reduction gear, coupled to a motor. The machine is desigened for operation on 440 volts, three phase, 50 cycles, AC supply. Supplied completely with a counter and push button starter. With 12 nos cast iron spheres or steel spheres (steel balls) hardened, approx. 48 mm in diameter, each weighing 380-445 gm.