- Built from high quality material with high strength and hardness for durability and practical use. Uses an adjustable mini magnet to help install new planer blades in perfect alignment with precision. It accepts high-performance magnets and holds the knife to a length of 20. - Each planing blade is housed in a frame with magnets for firm attachment to a cutting head. Simply place the gauge over the cutting tool and then adjust the correct height of the cutting tool. - Adjustable planer blade calibration knife adjustment tool for woodworking tools. Fits all makes and models of surface planers, jointers, and combination planing / thickness planing machines. Can be used for planing and joint planing. Includes 1/8 knife heads for precise adjustment of the leveling blades. - Simplifies the adjustment of the cutting tool in a cutting head and stabilises the cutting tool blade. A time-saving device when mounting and adjusting planer blades. Use scenarios - Replacing blades on a surface planer: use the tool to achieve precise blade alignment before operation. - Upgrading or servicing a jointer or combination planer: set blade height accurately with the gauge to ensure even cuts. - Planing and joint planing tasks: use the 1/8 knife heads for precise leveling blade adjustment and consistent results.