Adjustable Setting Blocks: Adjustable to any size single device between 1/64 inch and 1-1/16 inch with 1/64 inch accuracy. Easy-to-read scale quickly locates reference heights and sets tool heights or fences Location. is done quickly and easily. QUICK ADJUSTMENT AND LOCKED ACCURACY: Set your exact height in just three steps with the adjustable setting block. Press the quick adjustment button and slide the reference plane up and down to the specified height. Use the trimmer to your exact size, then tighten the locking knob. rulers provide height/depth settings: The "TOP" ruler measures the height from the bottom of the base to the top of the reference plate. Use this to set the distance between the bottom of the drill and the table of the drill press. The "BOTTOM" scale measures the distance from the bottom of the base to the bottom surface of the reference plate. It's perfect for adjusting the height of a router bit or the depth of cut of a table saw. 2 scales provide you with multiple applications. PREMIUM QUALITY: Base and reference plate are carefully machined from solid aluminum alloy and anodized. The adjusting screw shaft is made of high quality stainless steel. The cumulative error tolerance of the laser-engraved ruler is 0.004 inch . This small and convenient height setting tool will simplify all your mechanical setups, requiring no block combinations or calculations, and does not take up any storage space. COMPACT AND MULTI-PURPOSE: This handy adjustable settings block is small in size and powerful. You can use it to set router bit height, table saw depth, drill hole depth, saw fence distance, test cut depth, and more. Material: Aluminum alloy colour: red Package Contents: 1 x Setup Block Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.