Popular science monthly . light isgarages,. The electric optigraph whioli teaches the elements of musicby causing the pupil to visualize whole phrases at once The lamp has thirtyfeet of cord woundaround a reel. Aswivel enablesit to be extendedin any direction An Extension Reel forElectric Lamps WHEREVER an extensionneeded or desired, as inblacksmith shops, factories, stores or evenin the amateur workshop, this automaticreel for the cord will be appreciated. Itis equipped with thirty feet of lamp-cordand is secured to the wall or any otherconvenient place through the arms of aswivel-joint. This
Popular science monthly . light isgarages,. The electric optigraph whioli teaches the elements of musicby causing the pupil to visualize whole phrases at once The lamp has thirtyfeet of cord woundaround a reel. Aswivel enablesit to be extendedin any direction An Extension Reel forElectric Lamps WHEREVER an extensionneeded or desired, as inblacksmith shops, factories, stores or evenin the amateur workshop, this automaticreel for the cord will be appreciated. Itis equipped with thirty feet of lamp-cordand is secured to the wall or any otherconvenient place through the arms of aswivel-joint. This swivel-joint is a special featureof the device. It enables the man to walkin any direction with thelight. Anautomaticlock is pro-Aided to holdthe lamp anysj)ccified dis-tance fromthe reel. When it isdesired tosliorten thecord, a slightforward pullunlocks theratchet, thereel revolvesand windsthecord back. R44 Popiihir Srifure Miitilli!//
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
