The FPM FG-L30 Optical Plummet is very easy to use and helpful to find upward and downward plumb lines over medium distances, for instance when taking measurements for high-rise building constructions, industrial buildings or mine shafts.
The instrument can be accurately levelled using the 20“ reversion bubble level. The FG-L30 can be put on any LEICA/WILD type tribrach with forced centering mechanism. Made in Germany.