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NRG_34m_TallTower_Installation_Manual_and_Specifications_Rev_1.05.docx
19 April 2011
Figure 1
NOTE: Lining up the ridges on the body of the wind vane will cause the sensor to indicate a north reading. Be
sure to keep this in mind when orienting the wind vane on the mounting boom.
2. Stand so that it is possible to sight along the tower from the top to the base. Align the bearing mark on the
compass so that it points directly in line with the tower, top to base. The bearing of the TallTower in the
example in Figure 2 is 270 degrees.
Figure 2
3. Without moving the base of the compass, rotate the bezel so the north end of the needle points to the
declination mark that corresponds to local declination.
4. Loosely attach the mounting boom to the TallTower. Lift the compass to a vertical position so the bearing
mark points straight up. Use a level if necessary.
5. Sight through the compass so the center of the compass is over the point where the boom contacts the
tower, with the bearing mark still straight up. See Figure 3.