. The medical and surgical uses of electricity : including the X-ray, Finsen light, vibratory therapeutics, and high-frequency currents . to the electro-therapeutist. Without it he would often findhimself quite at sea, and would be liable either to get no results or, incases especially of internal treatment, when the resistance is low, accom-plish far more harm than good. The meter Fig. 77 is a good one, hav-ing been calibrated with great care and from standard electric test scale indicated by the lower figures gives the low reading of mil-liamperes, by fraction of milliampere. The up
. The medical and surgical uses of electricity : including the X-ray, Finsen light, vibratory therapeutics, and high-frequency currents . to the electro-therapeutist. Without it he would often findhimself quite at sea, and would be liable either to get no results or, incases especially of internal treatment, when the resistance is low, accom-plish far more harm than good. The meter Fig. 77 is a good one, hav-ing been calibrated with great care and from standard electric test scale indicated by the lower figures gives the low reading of mil-liamperes, by fraction of milliampere. The upper scale gives the highermilliampere readings. The instrument is sensitive and the pointer willoscillate quite freely, but it is supplied with a dead-beat attachment, sothat the pointer can be immediately brought to rest by pressing the knob. APPARATUS FOR ELECTRO-THERAPEUTICS. 289 It is of a type similar to the Weston & Kennelly meters, and is practicallyunaffected by outside magnetism. The vertical form of milliammeter (Fig. 78) is, because of its con-venience, preferred by many from the fact that it is easier to read from a. Fig. 74.—The Bailey Hydro-Rheostat (Van Houten & Ten Broeck). vertical scale than from a horizontal one. The lower scale is from o to50, and the upper scale from o to 500, the change from one scale to theother being quickly made by moving the switch shown in the front of thecut.
Size: 1741px × 1435px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorrockwell, bookcentury1900, bookdecade1900, bookyear1903
