COMP Cams Uncategorized 5634 COMP Cams 6" Digital Calipers are the handiest precision measuring tool available. Dial calipers can measure inside dimensions, outside dimensions or depth to .0005" accuracy over the entire 6" range. Digital Calipers, 0-6" US COMP Cams 6" Digital Calipers, .0005" COMP Cams Digital Calipers 0-6in Us