Fowler’s 0_22″ Dial Depth Gage comes with six interchangeable rods with a 0.22″ capacity, carbide contact point and 2 extra points for small applications. Provides rapid measurement of hole depths. Measurements automatically registered directly on dial face in .001″ graduations. The dial indicator can be easily adjusted for zero setting. Graduation: .001″. 0-1″ travel indicator.. Accuracy of the dial indicator meets Federal specifications. Rod extensions of 1″, 2″, 3″, 4″, 5″ and 6″ are included. Rods can be connected together for a full 0.22″ capacity. Includes 2 extra points for small hole applications; one 0.078″ dia. x 1″ long and one needle point x 1″ long. Base is hardened steel, ground and micro lapped for accuracy. Standard 4-48 thread removable carbide ball contact point. Rack spindle and pinions are hardened stainless steel to ensure long wear and continuing accuracy. Includes shop hardened case.