British Rainfall 1912, p.58
|
|
|
|
|
introduction | ||
|
|
previous | ||
|
British Rainfall 1912, p.58
it glass by glass, a "dipper" has been provided, made of copper, with a very narrow neck, and containing exactly five inches of rain for a five-inch funnel when it is filled to the lip. After the measurement with the rod, this dipper is carefully inserted and pressed down to the bottom of the receiever, so that it becomes filled with water. It is then withdrawn, bringing out exactly five inches of water which is poured away. The dipper is inserted as frequently as may be necessary, and the number of times that it is brought out full is noted. When it at length comes out only partially filled, the water is poured from it into an ordinary graduated measuring glass, and finally the remnant of water in the receiver is poured into the glass and the measurement completed. In this way a correct amount of the month's rainfall can be made by using the graduated glass only once or twice, instead of twenty or thirty times, as was necessary formerly. The first of these new gauges was fixed by Dr. Mill, who designed it, at The Stye, above Seathwaite, in September, 1912, and no difficulties were reported with regard to its use during the following winter. Time, however, will be required before the sufficiency of the instrument and its durability are established. The experimental gauge was made by Negretti & Zambra, to whom we are obliged for the accompanying illustration. |
|||
|
|
|||
Lakes Guides menu.