Gauge blocks are precision measuring tools used to calibrate and verify the accuracy of measuring instruments. Made from high-quality materials like steel or ceramic, they come in various thicknesses and are often used in engineering and manufacturing settings. Their flat surfaces allow for precise stacking to create specific measurements. These blocks are essential for ensuring that tools like calipers and micrometers provide accurate readings. By using gauge blocks, technicians can maintain quality control in production processes, ensuring that parts meet required specifications. Their reliability and precision make them a fundamental component in metrology.