Webster hardness tester of Shenyang TX Testing Instrument Co., LTD is currently the only one that meet all of the following standards and procedures.
Range: 0-20 HW (the equivalent of 20-110 HRE)
Indicator Error: 0.5 HW (5 -17 HW)
Repeatability Error: 0.5 HW (5 -17 HW)
Weight: 0.5 kg
Maximum specimen thickness: compare according to opening size and model
Minimum sample inner diameter: compare according to the anvil size and model
Otherwise, W - B75, W - BB75 Webster hardness testers for copper alloy, and W - B92 Webster hardness tester for stainless steel, respectively suitable for testing the hardness of materials such as copper, brass and mild steel.