1907 price list, cancelling previous lists, of light filters, cameras, and all materials for orthochromatic and colour photography : scientific instruments for light measurement, photo spectroscopes, photo micrographic appliances, etc. (1907)
t8 Rejtistahces for Regulating the Supply of Currents. … ance.— In this Rheostat the heat generated in the Resistance wire is rapidly conducted to a -«T4)porting plate, which becomes the Radiating Resistance wound on porcelain bar, moun- •urlace. This is accomplished by the use of en- ted on cast iron base, with ventilated cover amel, which attaches the…
Photography -- Equipment and supplies · Photography, Orthochromatic · Color photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
