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 236
he oil tobe tested is discharged under a constant head, which is insuredby air-pressure applied by a pneumatic trough. The tempera-ture of the discharged oil is measured near the point of dis-charge. 139. Perkins Viscosimeter.—The Perkins Viscosimeterconsists of a cylindrical vessel of glass,… … 206 EXPERIMENTAL ENGINEERING. L§ ML inch less than that of the cylinder. In practice the cylinder isfilled nearly full of the oil to be tested, and the piston inserted.
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