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INSTRUCTIONS FOR DETERMINING WHAT KIND, QUANTITY AND INSTALLATION OF LUXFER PRISMS TO USE.


    Heretofore it has commonly been the practice, in the application of Luxfer Prisms for one of the trained lucical engineers of the Companies to accurately survey each proposition, and determine scientifically the exact kind and quantity of prisms and method of installation necessary to produce the best results under the conditions of such proposition. The vast increase in the business of the Companies, and the wide and constantly increasing demand for these Prisms, has rendered it impossible to respond promptly in this manner to the requests for such surveys, and hence it has become necessary to provide the public, and particularly architects and engineers, with the means whereby they can themselves determine with accuracy the necessities of all ordinary cases. To this end we present a series of tables, each properly explained, by the use of which the result desired may be readily accomplished.
  Pocket Hand-Book of Electro-Glazed Luxfer Prisms - Page 79