GoVets offers Precision Measuring - Gauges Blocks and Standards in the Machining category to help customers complete their projects. Pin Gauge Sets are precision measuring tools used to measure the size of a hole or a slot. They are composed of a set of pins of different sizes that are used to measure the size of a hole or slot. The pins are made of hardened steel and are available in a variety of sizes and shapes. Shop today to find the right Pin Gauge Set for your project.