Features 1、With hand‑held design, easy to use, easy to carry, put the sample in and use it, with high efficiency and good reliability. 2、With mechanical regular design, compression spring detection device, tightly connected assembly, not easy to damage and has long service life. 3、With independent dial, built‑in shrapnel type force transmission, intuitive and clear readings, accurate measurement. 4、Hardness Tester is a portable instrument which can measure conveniently the aluminum alloy, especially can measure special workpiece shapes which can not be or inconvenient to be measured by other instrument. 5、Used to ascertain whether the workpiece is processed by improper alloys, judge whether the workpiece alloy composition is qualified. Specification Item Type: Hardness Tester Model: W-20 Material: Iron Application: Metal hardness measurement Range: 0~20HW Accuracy: 0.5HW Applicable Material: Aluminium alloy Hardness Range: 25~110HRE Specimen Thickness: Approx. 0.6-6mm / 0.02-0.24in Specimen Inner Diameter: Approx. ＞10mm / 0.4in Package List 1 x Hardness Tester 2 x Hardness Block 1 x Spare Indenter 1 x Wrench 1 x Screwdriver 2 x Key 1 x Manual 1 x Carrying Case