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Caption: Course Catalog - 1898-1899
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ELECTRICAL ENGINEERING 85 Kelvin balances, electrostatic voltmeters, Shallenberger, Thomson, and Shaeffer recording meters, hysteresis meters, electrometers, condensers, inductive and non-inductive resistances, lamp, german-silver, carbon, and water rheostats, a Brackett cradle dynamometer, tachometers, revolving contact makers, and other devices and appliances which are essential to the thorough experimental study of direct and alternating currents. A standardizing laboratory is equipped for accurately measuring current and electromotive force, thus permitting at all times ready calibration of the instruments used in the laboratory. An experimental telephone and signaling line has been erected, and several sets of receivers and transmitters have been provided for testing purposes. A high potential testing transformer, with a specially designed electrically heated oven, and other accessory apparatus, facilitate disruptive tests on insulators and insulating materials. The photometry rooms are supplied with two electric light photometers, one of which is the latest type of KruessBunsen apparatus fitted with a standard Hefner lamp and various accessories. There are numerous types of incandescent lamps and of continuous and alternating arc lamps, and various conveniences for making candle power, life, and efficiency tests are provided. The battery room contains a collection of primary cells, and over 90 cells of secondary battery, including several makes, fitted with switchboard and testing conveniences. The work-shop, shared in common with the department of physics, is supplied with an engine-lathe, a speed lathe, a Universal milling machine, a grinder, etc., and a line of fine tools. An electric motor furnishes power for this shop. The services of an experienced mechanician enable the department to manufacture special apparatus as required. The University electric lighting and power plant is available for tests by the department. It consists of two West-
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