These five main menu keys are horizontally arranged along the lower edge of the touch screen. The main menu key functions change to match specific instrument Mode settings. The main menu keys generate function‑specific submenus. The various measurement modes are selected by pressing the Shift key and then the Mode (9) key. Descriptions of the various measurement modes can be found in the applicable Measurement Guides listed in Measurement Guides.

These submenu keys are arranged along the right‑hand edge of the touch screen. The submenu key labels change as instrument measurement settings change. The current submenu title is shown at the top of the submenu key block.