What factors are often overlooked when purchasing a hardness tester?

1. Coaxiality is less than Φ0.2mm. Specifically, this means that the upper indenter and the lower lifting screw must be on the same vertical axis, and the error cannot exceed Φ0.2mm. This is also not something that can be achieved through visual inspection.
2. Repeatability must be good. This parameter is a comprehensive evaluation of a hardness tester. If the results are different every time, what is the use of buying such a machine?

Our company, Taiwan Nakazawa Co., Ltd., specializes in the production of precision metallographic testing equipment, such as metallographic cutting machines, metallographic grinding and polishing machines, Vickers hardness testers, metallographic mounting machines, and other precision equipment. Friends in need are welcome to come and make a purchase.