Campbell X-ray and high-frequency apparatus is the standard of the world : it has no peer.

  • Campbell Electric Company (Lynn, Mass.)
Date:
[1911], ©1911
Catalogue details

Licence: Public Domain Mark

Credit: Campbell X-ray and high-frequency apparatus is the standard of the world : it has no peer. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    RKus^^fc^jxrort {*& w- PENETROMETER Within the large circle of the penetrometer are twelve smaller circles, arranged clockwise. These circular openings are filled with material which cuts off the X-Ray in varying degrees. On the outside of the penetrometer is a clock hand and by observing through the fluoroscope the last circle through which the clock hand is visible the degree of penetration in any tube may be estimated. Two to four degrees of penetration are best adapted to therapeutic work where medium or low tube is indicated. Four to six degrees are best adapted to radiographic work and a penetration of eight degrees is sufficient for deep work. The photographic piate is more sensitive than the eye and the exact pen- etration of a tube may be def rrmined by placing the penetrometer on the plate on which exposure is made, being careful that it does not come under part exposed, and noting the number of circles which appear on the developed plate. Price $5.00. EYE MAGNET At the request of a number of our customers among the Oculists we have added this accessory which may be used on the Cautery Circuit. It has ample lifting capacity and its usefulness will appeal to any physician who is called upon to remove steel chips from the eyes. Price $3.50 ROTARY CONVERTER We find that when operating a high frequency coil on direct current a much smoother and better quality of current output is obtained by the use of a rotary converter of the design that we regularly furnish with our out- fits. This converter may also be used as a motor. Price (110 volts), $35.00.