[NTD Testing] this impact device does not damage or significantly mark the of the tested object. It is ideal for finished parts and components where integrity is critical, ensuring reliable hardness readings while preserving appearance, dimensional accuracy, and overall part performance. [Simple Assembly]Featuring a simple internal structure and a complete set of accessories, this device can be assembled and connected quickly without complex tools,making it easier to reach awkward testing positions. Clear connection points help reduce setup errors and stable test results. [Simple Operation]Operation is straightforward: simply connect the impact device to a digital hardness gauge (not included), place the probe firmly on the test , and press to obtain instant hardness data. allowing measurements in various positions and angles, even in complex or narrow spaces. [Excellent Performance] this D‑type impact device supports a wide range of material hardness measurements. When paired with a compatible hardness testing gauge (not included), it enables fast, reliable hardness evaluation of workpieces, significantly reducing manual workload and improving efficiency. [Wide Application]Designed for workpieces up to170- 960HLD, this D‑type impact device is suitable for various metals and engineering materials commonly used in laboratories, workshops, and training environments. It is ideal for research, experimentation, and professional learning, helping users build practical hardness testing skills., Weight: 0.29321480846 Pounds, Manufacturer: Wesafrae