Yfyiqi Sand Mould Surface Hardness Tester Wet Sand Mould Surface Sclerometer Hardness Testing Instrument Firmness Tester B Type with Maximum Load 980G Compression Stroke 2.50mm for Coarse Sand

description Load under pressure: 50g Head shape and size: Ball R12.70 Adjust the 0 bit, when the pointer is not in the 0 bit, turn the adjustment ring, so that the pointer to 0. The determination was made at 3~5 times per assay, and then the average number was calculated, as well as the hardness of the part. When used, the hardness is pressed in the sand on the test plane (axis hardness of the surface to be perpendicular to the plane of the sand), sand hardness meter gauge plane and the close contact, the pointer is stopped at a certain value, press the locking pin to lock, reading test a fixed value, and then releasing the locking pin so that the pointer reply 0. See more product details