Vaisala WM30 - Manual (Page 22)

User's Guide ________________________________________________________
20 _____________________________________________________ M210375en-A
2. Choose a known wind direction reference point on the
horizon with the help of a compass.
3. Point the nose (1) of the vane at the reference point.
4. Hold the vane in position and slowly rotate the
mounting piece (4) until wind direction shows proper
value.
5. Secure the mounting piece (4) to the mast by tightening
the mounting screw.