Measure 360 and Hold Data Protractor: measuring range 0–999.9°, resolution 0.05° (3'), accuracy ±0.5°. Measures inner and outer angles up to 360°; supports degree and degree/minute unit conversion. Features HOLD button to lock displayed measurement and ZERO button to reset reference point at any position for absolute or relative measurements. (Note: Rotating the knob is only for loosening/tightening; it does not fully fix the angle.) 4-in-1 Multifunctional Digital Goniometer: Combines protractor, spirit level, circular spirit level, and ruler. Calibrated using three bubble levels. (Note: This is not a digital level—no numerical display on LCD; tilt assessment is visual only via bubbles.) Main ruler features dual metric and inch scales. Automatic power-off after 5 minutes of inactivity to conserve battery life. Material and Design: Ruler body constructed from high-strength nylon fiberglass—durable, scratch-resistant, non-deformable, lightweight. Length: 230 mm. Compact, portable design with hanging hole for convenient storage. Applications: Suitable for carpentry, furniture making, construction, interior decoration, education, home improvement, and mechanical processing—including angle adjustment for table saws, miter saws, band saws, and similar tools. Package Includes: 1 digital angle finder, 1 CR2032 3V battery, 1 instruction manual. Certified to CE and FCC standards. Note: Color may vary slightly due to lighting and screen settings. Slight dimensional variations may occur due to manual measurement.