E-Flite Angle Pro II 5 in 1 Digital Incidence Meter

Features
Allows for easy calculation and adjustment of control throws
Incidence attachment allows precise digital measurement of airplane wing, tail and thrust angles
Attaches to most control surfaces
Resets to zero at any angle. No need to level the airplane
Also works as a precision level
Works on models of many types and sizes. Airplane and small helicopters (up to 450 class)
Auto power-off
Uses a commonly found CR2032 Lithium battery
This E-Flite Angle Pro II can measure precisely to 1/10 of a degree and displays the angle clearly on its easy-to-read digital screen. Measure exact elevator, aileron and rudder throws, and compare wing and tail incidence quickly and easily. The meter can be “zeroed” at any angle, so the airplane doesn’t have to be level in order to measure.