REED INSTRUMENTS KIRAY 50 Manuel D'instructions page 10

Maximum, Minimum, Average and Differential Functions
Press the MODE button to toggle between MAX/MIN/AVG/DIF modes.
The temperature value of corresponding modes are shown in the
secondary display area.
Turning Laser On/Off
Press the button to turn the laser indicator function ON and OFF.
When it is turned on, the laser indicator will be displayed on the LCD,
while the red laser beam will indicate the position you are measuring
during testing.
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