Anemometer

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Instructions for making and 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.