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<p>"LANGRY" (GERMANY) Assembled in China Mechanical Concrete Test Hammer/Concrete Schmidt Hammer Model HT-225N affixed with German Parts &amp; Components<br> <br> SPECIFICATIONS;<br> <br> Testing Range : 1500 to 8500 PSI<br> <br> TEST STANDARD<br> <br> - ISO/DIS 8045 International<br> <br> - EN 12 504-2 Europe<br> <br> - ENV 206 Europe<br> <br> - BS 1881, part 202 Great Britain<br> <br> - DIN 1048, part 2 Germany<br> <br> - ASTM C 805 USA<br> <br> - NFP 18-417 France<br> <br> - B 15-225 Belgium<br> <br> - JGJ/ T 23-2001 China<br> <br> - JJG 817-1993 China<br> <br> Standard impact energy:2.207 J<br> Pointer length: 20.0 ± 0. 2mm<br> Friction of pointer: 0.65 ± 0. 15N<br> Spherical radius of bouncing rod: 25±1.0mm<br> Elastic tension spring stiffness: 785.0 ± 30. 0N/m<br> bounce hammer unhook position: Scale line "100" at the score line<br> Operating length of elastic tension spring: 61.5±0.3mm<br> Impact length of bounce hammer: 75±0.3mm<br> Bounce hammer take-off position: Scale "0"<br> Anvil rate setting: 80 ± 2, Calibration value on steel anvil: 80 ± 2<br> <br> FEATURES &amp; ADVANTAGES<br> <br> Imported high-quality springs are more fatigue-resistant, aluminum alloy spring seat snap ring assembly<br> Adopt CNC machining center and other machine tools to refine the movement, and the rebound value is guaranteed.<br> Silicone bracket for soft hand protection, more comfortable rebound operation.<br> Finely grind the spherical zero-setting screws to make the rebound firing smoother and smoother.<br> Improved pointer design, easy to adjust friction and more stable.<br> Beautiful label and ruler are easy to read, and the hard oxidation treatment of the parts is beautiful and durable.<br> High-precision aluminum alloy flange is not easy to be damaged, and high-precision hook is not easy to be elastically empty due to abrasion.<br> Multiple original imported dust-proof components, cleaner movement and longer maintenance period<br> Abrasion resistance of super-hard 6061 aluminum alloy casing, and the button is not easy to fall off by stretching process.<br> <br> ACCESSORIES INCLUDED<br> <br> 1.No. Concrete Test Hammer<br> <br> 1.No. Elastic tension spring assembly<br> <br> 1.No. Grinding Stone<br> <br> 1.No. Slotted Screwdriver<br> <br> 1.No. Phillips Screwdriver<br> <br> 1.No. Pointer Slider assembly<br> <br> 1.No. Cushioning compression spring<br> <br> 3.Nos. Dust seal ring<br> <br> 1.No. Maintenance kit<br> <br> 1.No. Hand protector silicone holding one hand<br> <br> 1.No. Manual Operation<br> <br> 1.No. Calibration Certificate<br> <br> 1.No. Injection molded vibration proof carrying case.<br> <br> WARRANTY : 2 YEARS</p>