Nikon Laser IRT 4-12X42, Instruction Manual

Target range cannot be obtained 

• Be sure that nothing, such as your hand or 
finger, is blocking the laser emission aperture 
and laser detector. 
 
• Be sure that the laser emission aperture and 
laser detector are clean. Clean them if 
necessary. 
 
• Be sure that the target shape and condition 
is appropriate to reflect the laser beam. 

• Replace battery. 

 
[----] (“Cannot measure”) appears 

• Be sure to hold the unit steady while 
depressing the POWER button. 

• Be sure the target is within measuring range 

 (33-766 

yards) 

 
Closer target cannot be measured  • Be sure that nothing, such as leaves or 

grass, is between the Laser IRT and the target. 

 
Target beyond a certain distance 

• Be sure that nothing, such as leaves or 

cannot be measured    

grass, is between the Laser IRT and the target. 

 
Measurement result is unstable 

• Replace battery. 

• Be sure the target shape and condition is 
appropriate to reflect the laser beam. 

• Be sure to hold the unit steady while 
measuring the distance.  
 
• Be sure that nothing, such as leaves or 
grass, is between the Laser IRT and the target. 

 
Incorrect result is displayed 

• Replace battery.