A magnetic base is a most useful accessory for a dial indicator. Clams, or â€?snugs ,â€?permit orienting the indicator at almost any angle relative to the base. To reduce spring and flex in the setup, all overhangs of the support rods should be kept to a minimum.
Dial indicator are comparative instruments. While the distance from the crank centerline to the block deck surface (the â€śdeck heightâ€? may be of interest, of arguably greater importance is its uniformity from end to end and side to side. A fixed-length gauge bar allows a dial indicator to gauge this variation.