Specifies which hands or needles to display for the gauge.
The big hand is the minute hand in clocks, the needle in a compass, the speed in speedometers, and the 1000-foot increments in an altimeter. It is also the switch in the rotary dial.
The little hand is the hour hand in clocks and the 10000-foot increments in an altimeter.
The long, thin hand is the second hand in clocks and the 100-foot increments in an altimeter.