With this all-in-one tool, you'll no longer need to use a ruler or micrometer to measure spring height. The back lit digital display provides accuracy in 2 lbs. increments. Simply set the spring height with the highly refined height micrometer tube (0.01" increments), put it in the vise and start testing. Max spring diameter is 1.7".
Warning: Do not crush height micrometer in vise. Read instructions before using. Instructions can be found in document tab above.