Saw Accuracy Miter Scale System Manufacturing facility Calibration. Assured out of the box to.003 precision of 6-inches. Gauge head is CNC maker perfectly square to bench and also table (no stampings). Vernier scale enables fast, 1/10th-degree angle modifications. Our very straight 24 inch (610mm) anodized-aluminum bar is 3/8 inch( 9.5 mm) thick by 3/4 inch( 19mm) broad and also features 5 bar adjusters that you can use to eliminate "play" in the miter port with the turn of a screwdriver. Microadjuster enables extra angle modification to 1/100th level. Favorable stops at 0, 10, 22-1/2, 30 as well as 45-degrees; restricted life time guarantee.