This tool produced following WMO guidelines is a weather vane of painted light alloy and stainless steel.
Its vane rotor spins on special low-friction bearings, with a good lifespan and continuity of use in dusty environments.
Its output signal is produced by an absolute encoder with a 360 degree electric track. This tool is available in two versions with different output signals – in tension the M1-D1 V, or in current the M1-D1 C; with polarity inversion protection.
All models can have a resistance wire heater added to its rotor mast.