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Scope Model 3
The optional scope replaces the sighting collimator (See page 17) on top of the instrument
and provides greater accuracy in aligning the laser to the direction of grade. The scope can
be swiveled and locked in place so its aimed toward any of the four beam axes. Using the
scope, follow the steps on page 17 to align the instrument.
Rechargeable battery BT-51Q,
Rechargeable battery holder DB-51C
AC/DC Converter AD-9B/7C
Installing
1 Insert the BT-51Q rechargeable battery into the instrument.
2 Place the DB-51C rechargeable battery holder firmly into the instrument and turn the bat-
tery cover knob to “LOCK”.
Charging
1 Plug the AC/DC converter (AD-9B or AD-7C) into the charger jack on the DB-51C
rechargeable battery holder.
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