Check-line MINI-MAX Operation Manual page 93

7) Press the MENU key multiple times to tab right, and the ESC key
multiple times to tab left, until the AUTO menu is highlighted and
displaying the submenu items.
8) Use the UP and DOWN arrow keys to scroll through the sub menu items
until APPROX LEN is highlighted.
9) Press the ENTER key to display the Digits Edit Box.
10) Press the UP and DOWN arrow keys to scroll the highlighted value.
11) Press the LEFT and RIGHT arrow keys to scroll the digit locations.
12) Repeat steps 10 & 11 until the APPROX LEN value is correctly
displayed.
13) Press the OK key to set the Approximate Length and return to the
menu screen, or ESC to cancel entering the Approximate Length.
14) Use the UP and DOWN arrow keys to scroll through the sub menu
items until AUTO SET is highlighted.
15) Apply a drop of couplant to the bolt or transducer, and attach it to one
end of the bolt. Rotate the transducer clockwise and counter clockwise
applying a small amount of pressure to eliminate any excess couplant
between the transducer and bolt surface. Be sure to always place the
MINI-MAX Ultrasonic Bolt Tension Monitor