SkyRC Center of Gravity Scale and Angle Meter for Aircraft. Real-time display of all data via Bluetooth on your smartphone. Nearly pinpoint adjustments are possible. Built-in 3.7 V lithium battery in each module (rechargeable). Maximum weight per scale: 20 kg (60 kg total). Set consisting of three angle meters and three center of gravity scales. The RC Gears app is available in the following languages: German, English, Japanese, Chinese. This set, comprising three center of gravity scales and three angle meters, is an unbeatable combination for optimally preparing fixed-wing aircraft for the next flight. First, determine the center of gravity with the sensor scales, connect the angle meters to the various control surfaces, and you can start initial tests via the real-time view on your smartphone. In the SkyRC RC Gears app, you can conveniently read the various measured weights and receive suggestions for optimal center of gravity adjustment. With the angle meters on the control surfaces, you can track the angles with a tolerance of 2° via the app and observe how much they change. Everything has been designed with the goal of allowing pilots to work as accurately as possible – all conveniently from their smartphones. A true revolution in technology.