> Problems:
… As noted elsewhere, accuracy is limited because it is difficult to assess better than 1 mm, though with practice, an accuracy of 0.5 mm may be achieved. Also, water droplets will tend to adhere to the sides of the various plastic vessels and reduce the amount to be measured. However, as accuracy is limited, this is not a major drawback.

… The greater problem comes with icy weather, and when snowfall has occurred. But then even the professionals have trouble with these phenomena. If freezing of liquid water is expected overnight, it is best where possible to measure the rainfall early (assuming it fell during the day), rather than let it solidify and have to melt out in the morning. Snowfall will need to be gently melted, preferably at temperatures not too far above zero - rapid melting in a warm room is not advised as evaporation may also be high, but again, given the limitations on accuracy, perhaps this too is not too much of a problem.

… Given that the gauge is made of plastic, deterioration due to weathering should be minimal, but nothing lasts for ever, and even plastic will suffer fatigue. Regular inspection should warn when replacement or repair is required.

[ PREVIOUS SECTION ] [ INDEX ]