British Rainfall 1867, p.7

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	British Rainfall 1867 page 7
	EXAMINATION OF RAIN GAUGE Reference Number 53. Date of Examination 1863, April 6. County Sussex Name of Station St. Leonards, Marina Owner and Observer J. C. Savery, Esq. Construction of Gauge III. (Numerals referring to a series of engravings). Maker's Name Casella Time of Reading Daily, 9 a.m. Height of Gauge above ground Level. Height of Gauge above sea level 31 ft. Diameters (that marked M = mean) 5.00, 5.02, 5.01, 5.00, M, 5.007. Equivalents of Water (Scale point / Grains) .1 / 500, .5 / 2510 Error at Scale-point specified in previous column -.001, -.005 Remarks on position, &c. In yard at back of Marina; very much sheltered by buildings on S.E., S., and S.W.
	The effect of these visits is varied, but uniformly beneficial. Those who are subjected to them, are frankley told of any departures from ordinary custom or established rules; and the consciousness that "there's a chiel amang ye takin' notes, and faith he'll print 'em," acts beneficially on very many whom I can hardly hope ever to visit personally. For it is seldom that more than twelve stations a week can be visited - and at that rate which could hardly be maintained - it would take two years incessant work to visit them all; so, with fragments of time only available, it will, indeed, be a lengthy process. However, with nearly a sixth of the gauges tested, I adhere to my motto, "nil desperandum." Probably, future examinations will be yet more serviceable, because I have recently designed the little instrument represented in the following figure - the object may as easily be explained as the modus operandi. The influence of trees or houses on the indications of rain gauges depends obviously neither on their height nor their distance, but on the relation of one to the other - in other words, the suitablity of any position for a rain gauge depends on the angle which is subtended by the top of the surrounding objects, which I have always held should never exceed 30°. The altameter represented in fig. 1 is an extremely simple instrument, depending on two infallible laws, (1) gravity, and (2) the angles of incidence and reflection are equal. It consists of a brass tube, 6 in. long, and three-quarters of an inch in diameter; near the top are double gimbals (c), by the outermost of which the instrument is suspended between the fingers, when, of course, the body assumes
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