Swift 3-1/8 ASI 0-140 MPH

Patented 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.

Dimensions: 4X4X7