Compact structure and lightweight design for portability and ease of use. Simple operation—place on a slope to support both absolute and relative measurements. Large display with automatic screen flip for easy reading. LM320B model features dual-side laser measurement for improved accuracy. Magnetic base on both sides (LM320A) or four sides (LM320B) allows secure attachment to metal surfaces. Powered by a 3.7V 300mAh rechargeable lithium battery with low battery indicator. Rechargeable via included USB cable with Type-C interface. Auto power-off after 5 minutes of inactivity to conserve battery life. Suitable for use in automotive, railway, military, industrial, mechanical, woodworking, construction, and telecommunications applications. Model: LM320A / LM320B (selectable) Magnetic Base: Two-sided (LM320A) or four-sided (LM320B) (selectable) Material: Aluminum alloy Color: Black Power Supply: 1 x 3.7V 300mAh lithium battery Charging Interface: USB Type-C Operating Time: Approximately 2 hours Measurement Range: 4 x 90° Accuracy: ±0.2° Resolution: 0.01° Relative/Absolute Angle Measurement: Supported Angle Lock Function: Supported Low Battery Indicator: Supported User Interface: Backlit display with automatic rotation Auto Power-Off: After 5 minutes of inactivity Bidirectional Laser Scanning: Available on LM320B only LM320B Laser Wavelength: 630nm–670nm LM320B Laser Output: Continuous wave, 1mW Operating Temperature: 0°C to 50°C Product Dimensions: Approx. 6.2 x 6.2 x 3.2 cm (2.44 x 2.44 x 1.26 in) Product Weight: LM320A: Approx. 97g (3.42 oz); LM320B: Approx. 123g (4.34 oz) Package Dimensions: Approx. 11 x 7.5 x 4.5 cm (4.33 x 2.95 x 1.77 in) Package Weight: LM320A: Approx. 182g (6.42 oz); LM320B: Approx. 209g (7.37 oz) Package Contents: 1 x Inclinometer 1 x Reflecting Board 1 x Silicone Pad 1 x USB Cable 1 x User Manual (in English)