James G. Biddle Company · Philadelphia : James G. Biddle · leaf 21
om storage battery. Howard Hospital Philadelphia. 9// Roentgen Portable Coil with self-starting mechanical interrupter ;operated from storage battery. Dr. Cephas Whitney, Georgetown, Demerara. 9// Roentgen Portable Coil with self-starting mechanical interrupter ;operated from storage battery. Dr.… … FIGURE 8. Roentgen 24-Inch Coil, with primary of variable inductance, mounted onhandsome cabinet with solid doors. Self-starting mechanical and electrolyticinterrupters are provided (the latter not shown) ; also Weston Ammeter, Wes-ton Voltmeter, controlling rheostat for no volts, adjustable mica…
X-rays · Radiography
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