Things You'll Need
Instructions
Build a Simple Rain Gauge
Place the ruler inside the container. Align the ruler with the bottom of the container with the increment lines facing outward. Carefully scale the outside of the container using the ruler lines as a guide.
Wrap the wire or straightened coat hanger around the cylindrical glass container in a spiral. Start at the bottom with a full loop and continue to the top. At the top, leave enough wire to form a hook. This hook can be attached to a deck railing or other stable object to prevent the rain gauge from being blown away by wind.
Secure the rain gauge in an open place where it will receive rain without interference from trees, shrubs, or eaves which may drip and lead to inaccurate measurements.
Check your rain gauge daily or weekly. If desired, record the amount of rainfall and empty the container. Monthly or even yearly rainfall can be tabulated by keeping accurate records.