Available 0-80 MPH/Clamp is included
Hall ASI, easily attached to tubing between 1" and 1-1/2" in diameter with the 12" clamp
Designed for low speed aircraft as an airspeed indicator. Used on the Quicksilver and other ultralights. A unique design using a floating disc indicator guided by a stainless steel wire inside tapered plastic tube. Easy to read.
How Accurate is a Hall Wind Meter?
National Institute of Standards and Technology. (NIST) has tested them a dual section wind tunnel. Side by side comparison with true airspeed on one side and the Hall wind meter on the other side.
Hall Wind Meter True air speed
P=99.2 to 99.8 kpa (744 to 748 mm hg)
T=294.3 to 295.7 K(21.1 to 22.5 C)
Remarkable results for a fully mechanical device. When you use a Hall Wind Meter you can be assured it works, and it is accurate.