The electric Blowe hardness tester SHR-187.5 has three testing methods: Brinell, Rockwell, and Vickers, with a seven level testing force, and can meet various hardness testing requirements; The SHR-187.5 adopts a Luo area dial with 0. SHR indication division, which improves the accuracy of the instrument's indication reading; The SHR-187.5 adopts a metal variable load handwheel, which improves the service life of the entire instrument; SHR-187.5 uses a motor to adjust the loading speed of the test force; SHR-187.5 optional head protection device can effectively improve the service life of the head.