1) To ensure the laser level will be accurate adjust the level vials so that the bubbles inside are in the middle of the two lines <br><br>2) Recommended working distance for vertical/horizontal lines is 5 meters <br><br>3) Recommended working distance for drawing point laser is 10 meters; <br><br>4) Tape measure 25 feet length  <br><br>5) Two level bubbles on top  <br><br>6) Laser projection: both horizontal and vertical laser light beam  <br><br>7) Materials: Rubber surface  <br><br>8) 1" wide stainless steel blade <br><br>9) This can also be attached to a tripod <br><br>10) 360 degree horizontal laser line and point <br><br>11) With Belt clip <br><br>12) Laser projector is powered by 3pcs x AG13/LR44 button cells (included) <br><br>13) Size: 115x88x40mm <div class="params_begin">Specification:</div><div class="params_group"><table border="0" class="params_group_table">  <tr>	<td class="params_group_name">			Package Weight		</td>	<td class="params_props">			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Qty per Carton</td>			<td class="params_value">				16			</td>					</tr>		  </table>		</div>			<div class="params_prop ">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Carton Weight</td>			<td class="params_value">				7.90kgs / 17.42lb			</td>					</tr>		  </table>		</div>			<div class="params_prop last_prop">		  <table border="0" class="params_prop_table">			<tr>					<td class="params_name">Carton Size</td>			<td class="params_value">				40cm * 30cm * 30cm / 15.75inch * 11.81inch * 11.81inch			</td>					</tr>		  </table>		</div>		</td>  </tr></table></div><div class="params_end"></div> <p>&nbsp;<img src="//lh3.googleusercontent.com/-oYp3-Nj18a0/Vzl4ATG8byI/AAAAAAAAiB0/flsa52IW_io-CXISwM-o_wO6Gth2NbbmgCCo/s829/sg%2Bback.jpg" alt="" /></p>