Cam Lobe Checking Tool, Chrysler 273-440 Small Block, Big Block, & Hemi, O-ring Secured Bore Mounting, 0-1.000 in. Dial Indicator Reads .001 in. Increments, Includes 2 Followers for Flat and Roller Tappet Cams (.904 & 1.000 in. Diameter)|Proform Cam Lobe Checking Tool for Chrysler 273-440 Small Block, Big Block, & Hemi.