(No key, no sounder. Mainspring broken)
Omnigraph Morse code trainer
Spring-driven Morse code trainer mounted on wood base, with 10 code disks.
New England Wireless & Steam Museum
A Non-Profit • Public • Educational • Engineering Museum
Spring-driven Morse code trainer mounted on wood base, with 10 code disks.
(No key, no sounder. Mainspring broken)