The Codegraph is a brand-new scheme for thoroughly and rapidly learning
the telegraphic code, and it has been worked out with the beginner in
mind. This code-learning system really adapts itself to the beginner,
and it gives a personal touch to each individual student according to
his needs. No other system can do so much, for the student sees, hears
and feels every letter and signal.

The greatest trouble that every one has in learning by listening to
regular messages is in separating the letters and words as they come in
so fast. There is no time to think, and letters pile up in the mind. The
codegraph avoids all confusion because every letter is under perfect
control and may be repeated as many times as desired; hard things can be
made easy; words and sentences can be built at will. We guarantee that
any one of average ability can make rapid improvement with the
codegraph.

What It Is. A complete codegraph outfit, as shown in the cut, has three
main parts: (1) The "plate and pen," (2) some form of "key and sounder"
and (3) two batteries. While any key and sounder can be used with the
plate, we wish to call especial attention to the duplex sounder shown,
as this has been designed to do double work. If you already have "Fun
with Telegraphy," for example, and want to order the "Codegraph Plate
and Pen," we will include, free of charge, an extra attachment for
connecting up your instrument.

The Plate and Pen. When the pen is lightly drawn over the plate, the
sounder responds and shows exactly how every letter and signal should
sound. The student can then practise each letter until perfect. The
surface of the plate is covered with a special insulating enamel, bare
spots corresponding to correct dots and dashes. The polished brass plate
measures about 6x8 inches and has a most elegant appearance. The book
tells all about practising, etc.

Duplex Codegraph Key and Sounder, as shown, has a double action and is
the latest thing in code-learning devices. By the mere turning of a
switch you can have the ordinary telegraph clicks or the wireless
buzzes, making two sounders in one and at the cost of one. The
combination sounder and a substantial key are mounted upon a finely
finished base with nickel-plated trimmings, binding-posts, switch, etc.
If you want to become an operator in the shortest possible time, no
matter whether you have ever tried before or not, get one of these
outfits and begin at once. You will be pleased