1. UNMATCHED PRECISION: Each gauge block in the 14piece set has a unique thickness. The thickness, height, and depth of each gauge are identical. They can measure fixed depths and heights or be stacked according to their thickness for a wide range of variations or sizes. flexible and practical. The gauge blocks can be used individually or stacked, offering hundreds of combinations to meet your diverse needs. 2. VERSATILE AND PRACTICAL 4IN1 GAUGE BLOCK: The thickness, height, and depth of each size in the gauge set are the same. The gauge blocks can be used individually to measure fixed depths, heights, and thicknesses, or stacked in hundreds of combinations to suit your various requirements. 3. CLEAR, EASYTOREAD MARKINGS: These 14piece setup blocks feature unique, brighter colors and white laserengraved labels on three sides. The crisp markings never fade and are legible, making them for table saws, routers, and other cutting machines.