Chicago : [Popular Engineering Pub. Co.] · leaf 60
they may be attached to the ordinary nomical lighting. Trial was made with lighting fixtures without changing the an alloy much used for motor castings latter, thus making the new system and containing 90 per cent of aluminum, "adaptable" to the old. The system is the remaining 10 per cent being… … INDIRECT ILLUMINATION IN OPTICAL GOODS STORE. messed in a solution of common borax as in counting rooms and places where such electrodes stand a current gradual- large clerical forces are employed. It is ly brought up to 250 volts. The current said that by this system the glare on the books and…
Electricity
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![An illustration from XIV [i.e. Vierzehnter] Verbandstag Verband deutscher Juweliere, Gold- & Silberschmiede Strassburg, vom 7.-11. August 1914 : verbunden mit einer Ausstellung alter & neuer Goldschmiedearbeiten und Uhren (1914)](https://img.insideoutlibrary.com/img/200/ia-xivievierzehnter00stra-103-75@270.webp)
