ERNS-Continued. 4438. The Excelsior Sciopticon, with patent three wick lamp, whichgives a uniform illustrated field up to twelve feet in diameter, 4 inchpiano convex condensing lenses, mounted in brass, spring clip forholding carrier with slide, has fine achromatic objective, with arack and pinion… … 4-439. 4439. The Peerless Sciopticon is made of Russia sheet iron; has a doublebody, the outer one being perforated to avoid heating; extension frontwith nickel-plated hood, which shuts off all reflected and diffusedlight; spring clip for holding carrier with slide; patent triunial lamp,the light…
Knights of Pythias
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
