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 and ZERO buttons — press HOLD to lock the current reading. (Note: Rotating the knob is for loosening/tightening only; it does not fully fix the angle.) 4-in-1 Multifunctional Digital Goniometer: Combines a protractor, spirit level, circular spirit level, and ruler. Calibrated using three bubble levels to assist with accurate angle measurement. (Note: This is not a digital level — no numeric display on LCD; tilt judgment is based solely on bubble alignment.) Main ruler features dual metric and inch scales. Auto power-off after 5 minutes of inactivity to conserve battery life. Zero function allows resetting to 0° at any position for absolute or relative measurements. Material and Design: Ruler body constructed from high-strength nylon fiberglass — durable, lightweight, scratch-resistant, and dimensionally stable. Length: 230 mm. Compact, ergonomic design for easy handling and portability. Includes hanging hole for convenient storage. Applications: Suitable for carpentry, furniture assembly, construction, interior renovation, education, mechanical workshops, and more — including angle setup for table saws, miter saws, band saws, etc. Package Includes: 1 digital angle finder, 1 CR2032 3V battery, 1 instruction manual. Complies with CE and FCC standards. Note: Color may vary slightly due to lighting and screen settings. Slight dimensional variations may occur due to manual measurement.