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6. Operation
6.1. Switching On/Off
On:
Press the “On/Off switch” to switch on the gradient module.
Off:
Press the “On/Off switch” for at least 2 seconds to switch off the gradient module.
6.2 Display
If the gradient spirit level is used in the inverted position (upside down – above your head), the display
screen turns too so that the measurement can be read easily.
The display switches off automatically after 5 minutes, as soon as the device is no longer being moved.
6.3 Acoustic signal
By pressing the display circuit ° / mm / m /% / in / ft / on / off switch acoustic (signal at 0 °and 90 °) for
more than 2 seconds the acoustic signaling is switched on. The closer the gradient spirit level gets to the
standard position, the more rapid the frequency of the acoustic signal.
This function assists you with levelling work, where it is not possible for you to read the measurement
from the display.
6.4 Hold function
The current measurement is frozen by pressing the “Hold function” once.
A previously measured value can be “frozen” on the display using this function.
The measurement remains unchanged until the “Hold function” button is pressed again.
6.5 Toggling between ABS and INC
You can toggle between ABS (absolute) and INC (incremental) by pressing the “Hold function” for more
than 2 seconds.
In “ABS” (absolute) mode, the measurement result is displayed based on the device calibration.
In contrast, in “INC” (incremental) mode, the measurement result is displayed based on a relative
reference level.
For example, you can take a measurement on a 5° inclined plane in “ABS” mode and then toggle to
“INC” function. In doing so, the measurement display is set to 0°. You can now take additional measure-
ments based on this new zero value. To leave “INC” mode, press the button again for 2 seconds.
