Short press                    key once,The corresponding symbol    “          ” appears 
in the display. Aim at the upper point (1) and         trigger the measurement. 
After  the  first  measurement  the  value  is  adopted.  Keep  the  instrument  as 
horizontal as possible. Aim at the point (2) and              trigger the measurement, 
the partial results in Intermediate line 1 and line 2, and the result (the red line) 
will be displayed in the main. 
 2、Indirect Measurement - determining a distance using 3 Measurements 
                 
 
 
 
 
Indirect measurement 2 
Press this button twice; the display shows the following symbol            . 
The  laser  is  switched  on.Aim  at  the  upper  point  (1)    and              trigger  the 
measurement; Aim at the upper point (2)    and              trigger the measurement. 
After  the  second  measurement  the  value is  adopted.  Keep  the  instrument  as 
horizontal as possible. Aim at the point (3) and              trigger the measurement,   
the partial results in Intermediate line 1 ~ line 3, and the  result  (the red  line) 
will be displayed in the main. 
3、Indirect  measurement  -  determining  a  distance  using  3  auxilliary 
measurements 
 
 
 
 
 
 
Indirect measurement 3 
Short press                key thrice  ,The corresponding symbol    “       ” 
appears in the display. Aim at the upper point (1)    and                  trigger the 
measurement; Aim at the upper point (2)    and              trigger the measurement. 
After the second measurement the value is adopted. Keep the instrument as 
horizontal as possible. Aim at the point (3) and              trigger the measurement,   
the partial results in Intermediate line 1 ~ line 3, and the result (the red line) 
will be displayed in the main.