Crain - Groove Plotter

This scriber features a two-part knurled brass knob for all necessary adjustments, without a screwdriver. The upper part adjusts the needle height according to the material thickness, and the lower part adjusts the offset distance between the needle and the guide being used. It includes a rounded-end guide for scribing walls and a lower guide for scribing joints, which runs along the edge of the lower piece of material while the upper piece is being scribed. The steel tool body provides an offset adjustment range of approximately two inches. The needles are replaceable (no. 371).