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.