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. X-Proof Special Features: Coolant, fluid and dust resistant to IP54 Specifications. Sealed bezel, top cap and dial with bellows on stem. Sealed back plate. Other Features:. 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.