X-ray apparatus : complete outfits and accessories for X-ray laboratories (1908)
Kny-Scheerer Company · New York : Kny-Scheerer · leaf 60
G/..5986 G/5987 G/5988 G/..5986 Time Switch for therapeutic treatment, consisting of a clock andCode NIDIF switch, which latter is connected to the primary circuit of the induc-tion coil. After the time for which the clock is set has elapsed, theswitch is automatically opened and the current…
X-rays · Radiography
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Catalog]. (1908)](https://img.insideoutlibrary.com/img/200/ia-catalog00macy-265-688.webp)
