Modular Anemometer with Ball Bearing

Simple anemometer.
With 626-ZZ ball bearing. 6mm x 19mm x 6mm
Low friction, pre-lubricated. Amazon. Brand: Angeek
6mm bolt and nut
3x small bolt: 3mm x 12..16mm
Printed in ASA. Tree supports required.
0.4 nozzle.
The 3 bolts clamp the upper part to the bottom part. This clamps the 3 arms, which in turn clamp the ball bearing.
Movie: https://youtu.be/C1Wv4mfn0YQ