Spectra Precision Focus 30, Руководство пользователя

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Spectra Precision FOCUS 30 User Guide 19
3 Getting Started
Optical Plummet
The instrument is equipped with an optical plummet, which has 2x magnification and
a focusing range of 0.5 m to infinity. The instrument can be positioned to an accuracy
of 0.5 mm at 1.5 m over a ground mark.
Fig. 3-7 Optical plummet
As shown in figure....
• To focus the crosshair, rotate the eye-piece.
• To focus the optical plummet to the ground, push in or pull out the optical
plummet.
For information on how to adjust the optical plummet, see
Optical Plummet,
page 61 .
Trigger Key
The trigger key functions as an On/Off key (
z
). A LED in the trigger key indi-
cates if the instrument is turned on. A solid light indicates On and a flashing light