Check the alignment of the table saw blade and fence, the parallelism of the connector/planer head to the table, the router/shaper spindle runout or any other setting or calibration measurement you want. It is the perfect kit for amateurs and small shops. Self-adjusting bevel groove rod, with horizontal screw and spring plunger, perfectly fits your bevel groove. Used to align and calibrate shop machines, such as table saws, band saws and drill presses. Made of high-quality aluminum alloy, the surface is anodized, corrosion-proof, rust-proof, durable. Name: table saw dial indicator corrector Model: long Colour:red+silver Material:Aluminum alloy Package Contents: 1 x Table saw dial indicator corrector 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.