How to make Rain Gauge

You will need:
Plastic bottle
Ruler
Transparent tape
Scissor

    

Step 1:

Start by cutting the top off the 1 litre plastic bottle.

It's important that the plastic bottle has a constant diameter so that it's easy to measure the volume of rain which has fallen.

 

 

 

Step 2:

Attach a ruler to the inside of the platic bottle,using a transparent tape. Make sure the ruler touches the bottom of the plastic bottle and you are done!