Excellent, economical, and robust tool is ideal for use in meteorology lessons. Each directional pole is clearly marked with 1-1/3" H letters. 
The sensitive cone bearing assembly responds to the slightest wind and is mounted on a tip-resistant plastic base. 
Measures 3-1/2" x 3-1/2" x 7-5/8" H. 
Vane length (rudder to pointer): 7-1/2".