Operating Instructions

21
Aim at the upper point (2) and press the button . The value is measured
and adopted.
Aim at the lower point (3) and press the button to trigger the
measurement.
Meanwhile, the height of (1) and (3) will be shown in summary line.
Press the button ,the meter will return to single measurement status.
Historical storage
Continue press the next value of previous 20 records (measurements or
calculated results) are shown in the reverse order.
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