©2012 Johnson Level & Tool - Rev. 2 9
Sound Function
The SOUND symbol displayed on the LCD means that the
sound function is activated. The level will beep faster when
the instrument gets closer to the position of 0º and 90º. When the
LCD displays 0º or 90º, there will be a continuous tone sound.
Hold Function
Press the hold key once (unit will beep once) to activate this function
and to display the HOLD symbol on the LCD. Now the instrument will
hold the current angle reading and the display will flash.
Laser Indication Function
The Laser symbol displayed on the LCD means that the laser
beam is activated. The laser output window will emit a bright
red laser dot.
Inclination Indication
The triangle arrows displayed on the two ends of the LCD indicate
the inclination direction of the laser digital level.
5821H-English_Manuals 5/2/12 8:04 AM Page 9
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