What is the best distance to measure an object. I am worried about the rain water. Should sit on my porch with the GMC-300E about 1.5 meters away from the rain or should I collect some in a glass container and test it at 2 cm? Thank you again
If you want test the rain itself, then collect the rain and put it close to the Geiger Counter. If you want to know how the radiation level surrounding you, then keep the Geiger counter with you.