Applications: Applications: The Digital Display Barcol Hardness Tester HM-934-1+ is the Hand-held portable Indentation hardness tester,which is the lastest research anddevelopment of our company. Used for measuring the hardness of: *aluminum, aluminum alloys, soft metals *fiberglass and other materials. Follow the standards:ASTM B648-00;ASTM HD2583-07;GB/T3854-2005. Features: * A digital indentation hardness tester, is the latest design and development of our company. * It is characterized in that provided with a balance positioning, a digital display of hardness value, and a non disassembly calibrationand adjusting. * It is with good stability, convenient calibration, and high accuracy of detection. * Small in size, portable. Single hand operation, easy to use. Can be used in any occasion as long as the hand can reach. * Wide test range, can test from very soft pure aluminum to a particularly hard aluminum alloy. effective test range equivalent to theBrinell Hardness of 25~150HB. * No need to be supported. Just test on one side of the sample with the hardness tester, no need to be supported. It is suitable for thetest of large and extra thick workpiece. * With the maximum hold function, recording the maximum hardness value during measurements. * Can be used for measuring not only Barcol Hardness, but also Brinell Hardness (HB), Vickers Hardness (HV), Webster Hardness (HW),Rockwell Hardness (HRB/HRE/HRF/HRH). * With the function of calculating the average value, can calculate the average value of the 29 sets of data at most. * Provide BT data output choice. Specifications:       Range    0~100Hba,Amount to 25~135HBW        Resolution    0.1HBa        Indication Error    81~88Hba±1Hba        42~48Hba±2Hba        Repeatability Error    81~88Hba±1.5Hba        42~48Hba±2.5Hba        Brinell Hardness    √        Vickers Hardness    √        Wenster Hardness    √        Rockwell hardness    √        Maximum Hold    √        Average Calculation    √        Operating Condition    Temperature:0~50ºC   Humidity:<80%RH        Power Supply    2x1.