3. Without moving your head or the ruler open the left eye and close the right eye. Read the number that lines up with the centre of the pupil of the left eye. This number represents your Distance PD in millimetres. You have just used this technique to measure your distance PD. 4.
Lift the receiver and listen for the dial tone. Enter *74. Press a number between 2 and 9. This is your Speed Dial digit. Dial the phone number you want to assign to this digit. Note: For domestic long-distance calls, dial 1 plus the area code and then the phone number.
Hold the lock so the numbered dial is facing you. The lock should have an arrow or some other indicator at the 12 o'clock position pointing to a certain number on the dial. Turn the dial three times to the right (clockwise) and then stop turning when the arrow is pointing to the first number of the combination.