With respect to on-site inspections, these wireless handheld devices, which weigh less than 2 kg, offer easy data recording. Using Shore Rebound, ultrasonic, or magnetic induction methods, large components such as 桥梁钢结构 and pressure vessels can undergo non-destructive testing. An example is the Leeb tester (D-scale) which has an accuracy of ±1% and interchangeable impact devices for different materials. Engineering specification compliance is verified through real time hardness evaluations using these devices, which are relied on by conventional maintenance teams.
