Robart Precision Model Incidence Meter RB404 V2Robart Precision Model Incidence Meter RB404 V2 Robart 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