Experimental engineering and manual for testing. For engineers and for students in engineering laboratories (1906)
Carpenter, Rolla C. (Rolla Clinton), 1852-1919 · New York, J. Wiley & Sons; [etc., etc.] · leaf 418
Fig. 185.—Mesure and Nouel Pyrometric Telescope. nicol P, and, traversing the quartz plate Q, strikes the analyzer A,and is seen through the eye piece OL. In the use of the instrument the analyzer is turned until theobject appears to have a lemon-yellow color. The position of … -■ Fine =f3 f JIilli_Ammeter Fig. 186.—The Morse Thermo-gauge. the analyzer is indicated by the graduated circle C, the readingof which may be referred to a temperature scale. Because ofthe variations due to personal errors of different observers theuncertainties of observations are likely to…
Building materials · Machinery
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