Dial Bore Gauges

The dial bore gauge is an essential measuring instrument for checking measure ovalization, conicity, and the internal diameters. It is widely used in fields such as precision mechanics and industrial engineering and provides reliable and repeatable measurements, which are crucial for ensuring the quality and compliance of machined components.

This tool consists of a chrome-plated rod with an insulated grip, designed to provide a comfortable and secure hold during use. At the heart of the bore gauge is the dial indicator, a highly sensitive measuring device that ensures precise readings. To increase its versatility, the bore gauge comes with a set of interchangeable extensions, allowing measurements across a wide range of diameters and depths to meet various dimensional inspection needs.

The operating principle of the dial bore gauge is based on a dial indicator (analog or digital), which converts linear movement into the simultaneous action of two contact points. These points move in opposite directions on a plane perpendicular to the rod, accurately detecting any variations in diameter or deviations in roundness (ovalization). This mechanism enables precise control of internal bore dimensions and diameter ovalization, which is essential in machining and assembly processes.

Thanks to its high accuracy and reliability, the dial bore gauge is a fundamental tool for those who require detailed metrological inspections. It is widely used in machine shops, metrology laboratories, and manufacturing sectors. For zeroing and calibration, the bore gauge can be paired with a parallel block comparator, which, by combining gauge blocks, allows the instrument to be quickly and effectively verified.