Quantcast Figure 2-2. Distance Measurements from Stadia Readings

 

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OPERATING PROCEDURE - TM-5-6675-329-13-P0025
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TM-5-6675-329-13-P Self-Leveling Surveying Level (Wild Heerbrugg Model NA2-80) NSN
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Figure 2-3. Line Leveling
TM 5-6675-329-13 & P
Figure 2-2. Distance Measurements from Stadia Readings
To simplify the distance reading, the footscrew (Figure 1-2, item 2) closest to the line of sight can be turned until
the lower stadia hair is on a full decimeter (foot) value. Only the upper stadia hair has now to be read and the subtraction
is easier.
2-7
LINE LEVELLING (see Figure 2-3)
To determine the difference in elevation between two widely separated ground stations, a line of levels is run
between the two stations, e.g. stations A to E in Figure 2-3. A number of intermediate instrument set-ups is selected so
that the sighting distances from the instrument-to-staff are about 30-50 m (100-150 ft).
2-9

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