Robart Precision Model Incidence Meter RB404-V2Robart has taken the industry standard into the digital age with the Model Incidence Meter - Version 2. Simply download a leveling app from either the app store or google play on to your smartphone. Mount your cradle (404C) to the meter bar. Mount the appropriate arms to the bar and start determining your incidences.Set up your airplane the same way full size builders do! The Robart precision model incidence meter is a must for setting proper thrust, wing and tailplane incidence on new models. Also used to determine why current models will not fly straight. Easy to use, assuring a great flying aeroplane. Features bearing mounted holder, no slop 'V-Block' clamps, steel counterweight; detailed instructions.FeaturesBearing mounted needle"V block" clampsSmart Phone Holder (404C)Steel counterweightDetailed instructions includedA must for building true and straight airframes