PORTABLE HARDNESS TESTER MODEL – NRP –1 IS ABLE TO TEST PARTS WHERE BENCH TYPE MODEL IS NOT USEFUL. THIS MACHINE QUITE HANDY FOR PRODUCT TESTING OF CRANK SHAFT, CYLINDER BLOCKS, LINER & ASSEMBLIES. THIS CAN BE USED FOR TESTING THE HARDNESS OF BOTH INSIDE AND THE OUTSIDE OF SURFACE TESTING, PIPES, BUSHINGS, BALL BEARING RINGS OR OTHER COMPLICATED PARTS. THIS MODEL CAN BE USED IN ANY DIRECTION WITHOUT AFFECTING THE ACCURACY.