Projects clear/ 3D vertical lines with a cross on the ceiling<br />Rotates around the center point for fast/ easy alignment<br />Fine adjustment knob for precise alignment<br />Setting out drywall tracks on floor/ ceiling and wall for partitioning<br />Transferring reference heights<br /><br />Vertical alignment of pipes Levelling electric sockets/ cable trays/ radiators and pipe installations Levelling and aligning doors and windows Vertical side fan angle 240 �� Accuracy ��2 mm at 10 m Automatic switch-off Yes Battery type 4 x 1.5 V (AA) Dimensions (LxWxH) 124 x 124 x 187 mm IP protection class IP 54 (IEC 529) Laser class &lt; 1 mW/ 635 nm/ Class 2 (IEC 60825-1:2008)/ Class II (FDA CFR 21 art. 1040) Laser functionality Square/ Level/ Align/ Plumb Laser line width at 5m distance &lt; 2 mm Low battery indication Yes Operating temperature range -10 - 50 ��C Operating time with alkaline battery 8 h Out-of-level warning Yes Plumb type Plumbing and additional horizontal and vertical alignment Self-levelling range at room temperature ��3 �� Tripod thread diameter 1/4 in/ 5/8 in Weight with batteries 990 g Horizontal fan angle 180 �� Vertical front fan angle 140 ��<br />