1. Unmatched Precision: Each adjustment block in the 14piece set of end gauges has a different thickness. Each gauge has the same thickness, height, and depth, allowing it to measure fixed low and points, or be stacked according to its thickness to achieve larger variations or sizes. It is very flexible and practical. The final dimensions can be used individually or stacked, with hundreds of combinations, sufficient to meet your different needs. 2. Clearly Readable Markings: These 14 structural blocks are treated with a unique bright color and have white laserengraved labels on three sides. The clear font never fades and is very easy to read, making it ideal for table saws, routers, and other cutting machines. 3. Flexible and Practical 4in1 Setting Blocks: Each measuring rod has the same thickness, height, and depth. The final dimensions can be used individually to measure fixed depths, heights, and thicknesses, or stacked into hundreds of combinations to meet your different needs.