*Level measure & vertical measure
* Function of the spectroscopic laser; 
a. level & vertical laser point 
b. level laser line 
c. vertical laser line
d. cross laser line
* Function of the angle conversion :
there the configuration of angle conversion, using it can incline the
level laser come from the laser aperture, so you can examine and
adjust the angle of object.

Laser wavelength: 650mm
Laser power: ≤mw
Laser grade: class 2
Laser point horizontal accuracy: ±0.5mm/m
The precision of level laser: ±30°/m
The precision of vertical laser: ±30°/m
The precision of cross laser: 30'/m
Voltage: 3 V DC
Work temperature circumstance: 0°C~40°C