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Invented by Otto Kirkpatrick in 1929, the Instructograph was used to teach telegraphy students how to interpret and transmit Morse Code, reading various practice messages off a series of punched paper tapes. A surprisingly long-lived product, the Instructograph was manufactured until 1983. 

SOURCES:

http://www.dieterbrachmann.de/Morsetasten/T-Detail-pages/D_0297_instructo.htm
https://technitoys.com/instructograph-morse-code-training-device/