Dwyer 473B-1 Vane Thermo-Anemometer with RH Air Velocity and Temperature Review Posted on: 28 July 2016 By: AlexCY007 Today we will be reviewing the Dwyer 473B-1 Vane Thermo-Anemometer.Tags: dwyer 473b-1 vane thermo-anemometerdwyer 473b-1 thermo-anemometerdwyer 473b-1 anemometerdwyer 473b-1 vane anemometerdwyer 473b-1dwyer 473b vane thermo-anemometerdwyer 473b thermo-anemometerdwyer 473b anemometerdwyer 473b vane anemometerdwyer 473bdywer thermo anemometerdwyer instrumentsThermo Anemometers