Select an average passenger car for making the test runs and mount the bank indicator on the center line of the dash. Suitable metal strap mountings can be made on which to mount the indicator, as shown in Figure 5-8. The metal strap holding the right side of the indicator on dash mountings should be slotted and a thumb nut provided so the steel ball can be adjusted to the zero degree position by raising or lowering the right side of the indicator. If there is any doubt about the selection of an average car, a bank indicator should be mounted on three different makes or year models for a check.