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By means of the sliding clutch and endless antagonistic spring control, which can be operated from both sides, the levelling instruments can be quickly aligned to the rod. The coarse-fine-focusing speeds up the focusing process with simultaneous improvement of the sensitiveness. For better distinction from the horizontal reticule line the stadia lines are short broken lines.
Compensator:
The FG-020 is equipped with a compensator which is sturdy and extremely insensitive to shocks and which makes the precision levelling of the head within parts of a second. The extended working range of the compensator allows a larger scale for re-levelling. Therefore, the FG-020 is quickly ready for measurement.
Circular level:
Correct reading with respect to height and side with comfortable arrangement close to the ocular.
Horizontal circle with right and left-handed numbering
The FG-020 is equipped optionally with a glass circle or with a mechanic circle. For directional setting-out the circle is numbered right and left-handed. The glass circle can be set by means of the circle drive: the mechanical circle can be set by means of a knurled ring.
Instrument body:
The waterproof design, solid body construction and rugged compensator ensure reliable and precise elevation measurement under the most adverse conditions
Telescope:
The telescope provides erect and unreversed image viewing. The instrument is easy and comfortable to use with the convenient location of the focus and lateral drive knobs. The optical sighting device allows quick acquisition of the rod target.
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