Fowler's 0 - 22" Dial Depth Gages 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 0.001" graduations • The dial indicator can be easily adjusted for zero setting • Graduation: 0.001" • 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 microlapped 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