HET800001 AP800 Digital Pitch Gauge Introduction:Developed by the R&D team in Align, the new AP800 digital pitch gauge is suitable for flybar and flybarless helicopters. The built in digital gyroscopic sensor is capable of detecting pitch angle, with result displayed through high contrast LCD screen, providing a simple and precise way of measuring pitch angle. Fatures: Built in digital gyroscopic sensor detecting pitch angle. Uses backlighting LCD monitor. Zero and Lock function. Detectable pitch range: -90° ~ 90°. Automatic screen rotation. Suitable for 200~800mm main blades. Build-in energy saving function. Power shuts down after 3 mins without any movement. Specifications: Body Dimension：108x53.7x16mm Suitable blade width：20mm~75mm Detectable pitch range: ±90° Resolution: 0.1° Battery: 2X CR 2032 Lithium Weight:36g (including battery)