Received a new unit from Scaled instruments. When you install the cups it no longer drops slightly like the older units always did. It still tells you in the directions it will but doesn't.
The setscrew material used now is very soft so don't tighten hard as the instructions say, because it will easily round out.
The starting threshold is much higher around 2 mph compared to less than 1 mph on the older units. So expect a lot of 0 mph readings during calm periods.
I compared the 2 units side by side for this assessment and what is clearly a defect IMO.
Here are the printed instructions:
3. Use the Allen wrench provided to tighten the set screw on the side of the wind
cups.
4. The wind cups should drop slightly when you let go.
5. Ensure that the set screw is screwed in fully and very tight. Failure to do so
will cause the anemometer to function improperly