In addition to the impact device probe, the optional accessories of Deguang Electronic Leeb Hardness Tester also include printers, support rings, and connecting wires. Different optional accessories can be selected according to the actual measurement situation to facilitate the measurement of the hardness of metals and other materials.
The support ring of the Leeb Hardness Tester is a support ring with a curved surface. For hardness measurement, it is often encountered in the measurement of materials such as curved surface tests. Different curved surfaces have different hardness test results. Leeb Hardness Tester support rings are a complete set of support rings, which contain multiple support rings of different sizes to suit workpieces with different curved surfaces.

戴英才 - 《涂料检验方法标准浅谈》
安环君; 张书玲; 赵春华 - 《理化检验(物理分册)》