Features Sturdy and Durable The hardness tester is made of excellent iron material, which is sturdy and durable, not easy to damage and can greatly extend the service life. Mechanical ruler design: hardness durometer adopts mechanical ruler design, equipped with pressure spring detection device, can be tightly connected and assembled. Independent Dial The hardness tester adopts an independent dial, integrated into shrapnel type force transmission, provides accurate measurement, intuitive and clear reading. Simple Operation The durometer is easy to use, just follow the instructions, with high efficiency and good reliability. Lightweight and Portable The hardness gauge is small in size, lightweight and portable, and can be easily held and used in various situations. Specification: Item Type: Metal Hardness Tester Material: Iron. Application: metal hardness measurement Range: 0-20HW Accuracy: 0.5HW Applicable material: aluminium alloy. Hardness range: 25-110HRE Sample size: Thickness: 0.6-13 mm Inner diameter:>10mm Package list: 1 x Metal Hardness Tester 1 x Hard Seat Protector Buckle (on Host) 2 x Hardness Block 1 x Replacement Probe 1 x Probe Storage Box 1 x correction key. 1 x Screwdriver 2 keys 1 x Tool Box Package List 1 x Metal Hardness Tester 1 x Hard Seat Protecting Loop (on the host) 2 x Hardness Block 1 x Spare Probe 1 x Probe Storage Box 1 x Correction Wrench 1 x Screwdriver 2 x Key 1 x Tool Box