ARP 100-9942 Billet Rod Bolt Stretch Gauge

ARP Billet-Stylerod bolt stretch gauge #100-9942, It is highly recommend using a ARP Rod Bolt Stretch Gauge when installing rod bolts and other fasteners where it is possible to measure the length of the bolt after tightening. It is the most accurate way to determine the correct pre-load in the rod bolt. Simply follow manufacturers instructions, Measure the fastener prior to starting, and monitor overall length during installation. When the bolt has stretched the specified amount, the correct preload, or torque, has been applied. ARP recommends you maintain a chart of all rod bolts, and copy down the length of the fastener prior to and after installation. If there is a permanent increase of .001in length or more, or if there is deformation, the bolt should be replaced immediately. Dont chance it! ARP offers a highly accurate stretch gauge with a dial indicator that reads in increments of .0005?. Features extra heavy springs for consistent repetition. Comes with a heavy-duty, insulated plastic carrying case for protection. A must for any serious engine builder.