Topcon RL-VH3A - Specialized Operation Modes; Laser Sensor Mode; Plumb Finder Mode

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Laser Sensor Mode (RL-VH3A/B Only)
For long range or outdoor applications, the instrument
can be used with an optional electronic laser sensor.
The Topcon models LS-70B or LS-70A are recom-
mended. Press the Laser Sensor Mode Pad. The
beam rotates at 600 rpm in this setting.
Plumb Finder Mode
(RL-VH3B has plumb beam for vertical operation only)
Provides a plumb laser spot below the rotating head to aid laser set-up over the initial control
point.
Laser sensor mode pad
LED
Plumb beam pad
for horizontal rotation
(RL-VH3G/A Only)
Plumb beam pad
for vertical rotation