Bore gauge calibration must occur after purchase and before the tool’s first use. Whether working with an electronic, a digital, a Vernier, or a dial bore gauge the user must make sure it is properly calibrated or all measurements run the risk of being inaccurate. Completing a bore gauge calibration can be done through the use of a setting master kit, a group of setting rings, a master setting tool, or a micrometer. By completing a proper bore gauge calibration before using a bore gauge, the operator is guaranteeing that measurements are accurate and precise right from the beginning. Back to entire glossary