Function Key Position
The position of the commands for the function keys (F1-F4), as described in this guide, is for right-hand operation. Conventionally, right-handed people hold the probe in their right hand and the meter in their left hand. The choice of function key location for the START and LOG commands is particularly important because it is often desirable to press these keys without looking at the meter. This situation occurs during spatial averaging, data logging, and time averaging.
The four function keys on the Model 8718B allow for easy operation with your thumb and the raised area around each key makes it easy to be certain that your thumb is in the correct location. The START and LOG functions are always operated with the F1 key for right-hand operation.
The 8718B allows you to change to left-handed operation with a few keystrokes. When set for left-handed operation, the START and LOG functions will be operated with the F4 key. The functions normally associated with the F4 key are then operated with the F1 key. The meter will remain set the same way upon turn-on and can only be changed by following the procedure described below.
To check or change the function key location...
1.Access the settings menu by following the procedure described in Accessing the Settings Menu.
2.Press 4 to select RGT/LEFT. A new screen will appear that shows the current mode.
F U N C T I O N 
K E Y S 
A R E 
S E T F O R R I G H T - H A N D E D
O P E R A T I O N
O K 
L E F T
F1 F2 F3 F4