Instructions for making an anemometer

Material:
  • Thin sheets of aluminum (cardboard)
  • Dowel stock
  • 2 glass beads
  • 2 thin wooden sticks, 18 inches x 1/2 inch
  • Aluminum solder
  • Nail

Procedure:
  1. The anemometer cups are made from the aluminum. Cut 2 circles about 4 inches in diameter.
  2. Cut the circles in half along the diagonal
  3. Join the straight edges with aluminum solder, making 4 small cups
  4. Attach the cups to 2 crossed sticks, so that all are heading in the same direction
  5. Join sticks to dowel stock as follows: Nail, glass bead, crossed sticks, glass bead, dowel stock

The glass beads will act as bearings so the wind will turn the anemometer freely.

NOTE: The anemometer will spin faster as the force of the wind increases.

Picture of an anemometer

Picture of an anemometer