1. Simplifies the setup and adjustment of cutting tools in a cutter head, stabilizing the cutting tool blade. A timesaving device for mounting and adjusting planer knives. 2. Adjustable planer knife calibration tool for woodworking tools, compatible with all brands and models of surface planers, jointer planers, and combination planers/thickness planers. Suitable for both planers and jointer planers. Fits 1/8' cutter heads, ensuring precise blade leveling. 3. Equipped with planer knives, each secured within a frame using magnets for firm attachment to the cutter head. Simply place the gauge over the cutting tool and adjust the blade to the correct height. 4. Made from quality, strength, and durable materials for longlasting use. Features an adjustable minimagnet to help install planer knives with precision alignment. Includes performance magnets that hold knives up to 20' in length.