Mechanical indicators are the most accurate method of monitoring the position of your sterndrive, outboard or trim tab. Unlike electric trim gauges, they are mechanically operated by a push-pull cable, eliminating the need to rely on an irritating "floating" needle. All indicators feature all billet aluminum construction including fully customizable faces. For a complete mechanical indicator system you must purchase the indicator as well as an actuator, a 33c cable and transom cable seal for each drive or tab you wish to monitor. When ordering, specify layout of the indicator (horizontal or vertical) as well as desired direction of the cable entry (top, bottom, left or right) and the type of actuator you are using.