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Disadvantages are obvious for the hardness measurement commonly used like Brinell, Rockwell, Vickers, Leeb, etc. Rockwell and Brinell with heavy loading force and big indentation, lead to serious destruction on sample surface. Vickers apply optical measurement, but only professional technicians can operate smoothly, impossible to measure hardness of heavy work piece, installed machinery and permanently assembled parts. Leeb hardness tester apply rebound and indirect method to measure hardness, easily lead to big deviation when convert to Brinell, Rockwell and Vickers scales.
Ultrasonic hardness tester UHT-950 applies ultrasonic contact impedance method to do comparative hardness measurement for testing pieces, with advantages of high accuracy, efficiency, portable and easy operation.
Ultrasonic hardness tester UHT-950 is widely used to measure hardness of small forgings, cast material, weld inspection, heat affected zone, Ion-nitride stamping dies and molds, forms, presses, thin walled parts, bearings, tooth flanks, etc.

SU-300M Motorized Ultrasonic Hardness Tester is a popular portable hardness tester. It applies method of ultrasonic contact independence to make hardness testing at the spot or in the laboratory.

SU-300M is a perfect portable durometer for hardness testing about the coating and plating, it can measure the hardness of chrome, copper plating, carburized layer and Nitriding layer effectively.

SU-300M is a NDT durometer due to the contact indention is too small to observe, it is one of the excellent solution totest hardness of finished products, such as, the mold, gear, shaft, rod, screw, rails, etc. 

SU-300M can not only work with the motorized probes, but also work with the manual probes, which is able to meet the different application in light of different condition of surface roughness.

SU-300Mconformsthe standard ASTM A1038-2005, DIN standard DIN50159-1-2008 and China National standard GB/T 34205-2017.

The Proceq Equotip 550 UCI hardness tester is a flexible UCI hardness tester for fine-grained material with any shape and heat-treated surfaces. The patented adjustable test load enables a wide range of applications.
Equotip 550 takes advantage of a new generation full color, dual processor touchscreen unit with enhanced software capabilities. The rugged touchscreen has enhanced software features and analysis functions. It offers a unique range of functions which ultimately help speed up on-site and laboratory inspections and analysis
The 550 package with screen and hardness tester is available in UCI, portable Rockwell, Leeb, or a combination of all three.