Search term: Digital Pitch Gauge, Electronic Pitch Ruler, LCD Display, RC Tester, High Precision Features: Digital Pitch Gauge LCD display. Mounting plate with magnets (detachable blade grips) Up to 800 wide blades (use from 200 to 800 size helicopters) Fast and accurate measurement Hold function Low battery indicator Calibration function Auto rotating display Auto power-off Description: The new Digital Pitch Gauge offers simplicity, high accuracy and ultra fase pitch angle measurement. Compact size, lightweight, easy to carry. Fit for Usual Blades of Helicopter Models Specifications: Color: Black Current consumption max. 3 mA Operating temperature 0 to +40 Celsius Operating voltage 3 V/DC (CR2032 x 2) Resolution 0.1 Degree Size: 122 x 68 x 20mm Net weight: 56g Package includes: 1 x Digital Pitch Gauge 1 x User manual