Product details:

Stretch is the most accurate way to measure fastener preload. Our Aluminum Rod Bolt Stretch Gauge is designed to hold itself onto the rod bolt while it's being tightened. Stretch is the most accurate way to measure fastener preload. Our aluminum Rod Bolt Stretch Gauge is designed to hold itself onto the rod bolt while it's being tightened. Includes .001" mini dial indicator that has been modified with high tension spring for more holding power and precision. Also features adjustable anvil to accommodate bolts up to 2.750" in length.