Swift 2-1/4 Airspeed Indicator 0-160 Knots

Patent product, Integrates the highly reliable MEMS sensor Precise, Durable, Accurate (reading), free from frequent regular calibration Accurate reading within low airspeed range, evenly allocated scale on the rest of the scale< Zero adjustable: just one button, the zero error introduced by weather and dynamic-static system pressure difference can be eliminated.