Globe Auditube
The Globe Auditube was manufactured by the Globe Ear-Phone Company
around
1912.
This conversation tube is 45 inches in length and has a bell opening
of 2.5 inches.
It was apparently produced in three sizes, priced $5.00, $5.50 and
$6.00 for the small, medium and large. (The one shown here is likely the
large one, but can't be sure.)
It uses a diaphragm ear piece which provides a high frequency boost
to the listener. This diaphragm ear piece is similar to that employed on
the Otophone made by E.B. Meyrowitz around 1887.
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