A Slip Gauge Box, also known as a gauge block set, is a precision tool used for accurate measurement and calibration in manufacturing and engineering. The box contains a set of rectangular steel or ceramic blocks, each with highly precise dimensions. These blocks can be stacked together to create specific lengths by using a technique called “wringing,” where the surfaces adhere to each other without any gaps. Slip gauges are available in standard sizes with extremely tight tolerances, often measured in microns, ensuring high accuracy in measurements.
They are commonly used for calibrating measuring instruments like micrometers and vernier calipers, as well as for setting up machine tools. Each block is finished with a high degree of surface flatness, making them ideal for precision work in industries such as aerospace, automotive, and tooling. The slip gauge box is an essential tool for quality control and maintaining the accuracy of measurements, ensuring that products meet the required specifications.