When the cost of a genuine
Dietzgen comes to so little
per year, can any price tag
justify a substitute?

This year, as every year, thousands
of young men will reach the point in
engineering training where the pur-
chase of a slide rule is required. This
is not only a new experience, but one
of much greater importance than most
realize. A slide rule is not something
purchased like a text book for a few
months use and then sold or shelved
when the classwork is over. A slide
rule is a lifetime possession, a con-

stant companion throughout the ca-
reer for which the young man is
training. If cheap and shoddy, it can
neither serve properly nor inspire the
respect for precision and fine crafts-
manship so essential to engineering
success.
Any thinking person will quickly
see that the true cost of a slide rule
can only be determined by dividing
its purchase price by the many years
through which it will be used. Such
sensible figuring also clearly shows
that the "saving" featured by the
price tag on any substitute for a
genuine Dietzgen Slide Rule is of no

importance, a matter of mere pen-
nies per year. Will you allow so little
to prevent you from getting so much
in a slide rule you will always be proud
to own? Insist on a Dietzgen. Sold
by the better dealers everywhere

Eugene Dietzgen Co.

Chicago · New York · San Francisco · New Orleans
Los Angeles · Pittsburgh · Washington · Philadel-
phia · Milawaukee · Dealers in all principal cities