The main types include vernier depth gauges, digital depth gauges, and dial depth gauges. Vernier depth gauges are suitable for general precision measurements (e.g., workshop assembly, basic part inspection) and do not rely on power, making them stable in harsh environments. Digital depth gauges offer quick, direct readings and are ideal for high-efficiency production lines or occasions requiring frequent data recording. Dial depth gauges combine mechanical stability with intuitive reading, suitable for on-site inspection where precise readings are needed without electronic interference, such as near magnetic equipment.
