F05294 Main Rotor Blade Electronic Measure Tool Digital Pitch Gauge Ruler For Trex 250~700 FB FBL RC Helicopter

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Product Description:

Notice: This gauge does not include batteries， because the battery is forbidden by AIR MAIL， you need to buy it in your local shop.

Features:

This gauge TL90 can be used on the helicopter with flybar or flybarless， the built-in digital gyro can detective the pitch of the blade automatically and display on the LCD with backlight