The Flight range of gauges from Smiths offers classic styling, clarity and high performance. Behind the classic look dial face the flight gauges are packed with modern technology, from the latest LED backlighting to microprocessor controlled stepper motor needle movement. The stepper motor allows the gauges to have a 270 degree scale and gives waver free needle movement.This 52mm diameter voltmeter from the Smiths Flight range is suitable for most classic applications and requires a simple 12v hook up for operation.