Meet the LOMVUM GR20 Digital Protractor Laser — a compact, high-precision inclinometer with a dual-side laser that delivers fast, accurate angle readings in tight spaces. Powered by a built-in USB-C rechargeable battery and equipped with a magnet for effortless attachment, this 360° protractor is designed to handle demanding tasks in woodworking, metalworking, and on-site layout with ease.

Key features

• Two-side laser design provides simultaneous left and right illumination for more precise measurements.
• Magnetized base allows secure mounting to metal surfaces for hands-free operation.
• 360° angle measurement with four directions or 2×180° ranges for flexible setups.
• Absolute and relative angle measurement to determine exact angles or differences between two angles.
• Angle to slope conversion and digital horizontal bubble for quick alignment checks.
• Backlit 1.44-inch display with a resolution of 0.001° for clear readings in any lighting.
• Unit switchable between ° and % for versatile applications.
• Data hold function to capture measurements when your hands are busy.
• IP54 waterproof protection for challenging work environments.
• Automatic shut-down after 5 minutes to conserve battery life.
• Compact, pocket-sized form factor with built-in rechargeable battery.

Specifications

• Model name: GR20
• Accuracy: ±0.2°
• Repeatability: 0.1°
• Unit Switch: °, %
• Display Resolution: 0.001°
• Screen: 1.44-inch
• Product Size: 60.6 × 60.6 × 30.8 mm
• Measuring Range: 4×90° / 2×180°
• Charging Interface: USB Type-C
• Battery Capacity: 3.7V lithium battery (300 mAh)
• Protection Level: IP54
• Working Time: 2 hours
• Product Weight: 106 g
• Working Temperature: 0–50°C
• Data Hold: Yes
• Magnet Function: Yes
• Angle / Slope Conversion: Yes
• Relative / Absolute Measurement: Yes
• Digital Horizontal Bubble: Yes
• Auto Shut-down: 5 minutes
• Unique Laser Design: Two-side lasers for improved accuracy

Why it’s the right tool for your projects

• Precision you can trust: With ±0.2° accuracy and 0.001° display resolution, small bevels and fine slants won’t slip by unnoticed.
• Versatile measurement modes: Use absolute readings to lock in a reference angle, or relative readings to gauge differences between two points — perfect for cabinet making, tile layouts, or metal fabrication.
• On-the-go compatibility: The IP54 rating keeps you covered against dust and splashes, while the compact size and lightweight design slip into pockets and tool belts.
• Effortless setup: The built-in magnetic base and dual lasers speed alignment on metal surfaces, and the auto-flip display makes readings readable whether the device is right-side up or inverted.
• Low-maintenance power: USB-C charging and a 2-hour working time, with an automatic 5-minute shutdown to extend battery life between charges.