Berger & Schroter PRO X7 Operating Instructions Manual page 25

5-6 Horizontal distance measure
Principle:
Measure distance: AC or AB
Horizontal distance: AD
Press and release Button to set the Horizontal distance Mode.
Short press power Horizontal distance
Angle
key to measure
distance and angle,
after calculation, hori-
zontal distance and
angle will display alter-
natively.
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