Instructograph Morse Code Practice Set
date: label: date made
content: ca 1920
notes: label: Description (Brief)
content: A portable practice set in a case used for teaching telegraph and wireless operators Morse code. Spring-operated motor with winding crank on right side. A punched-paper tape is pulled around a spindle. A spring-steel arm with a contact rides against the tape, making contact with the spindle when a hole passes by. That contact completes a circuit and activates a separate telegraph sounder allowing the student to write down the coded message. Three binding posts on top permit connection of a sounder and battery. A pivot arm can vary the speed of the device from "F" to "S" with "80" [characters per minute] as the mid-point. Label inside lid reads: "Code / Instructograph / Instructor". Variable speed motor drive contained in unit. The original handle has been replaced by a rope handle.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Sue K. Wheelock in honor of Mary Lucy and Sam K. Kincheloe and Sam G. Wheelock
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 1992.0316.01
label: catalog number
content: 1992.0316.01
label: accession number
content: 1992.0316
objectType: label: Object Name
content: Instructograph
label: Object Name
content: practice set
label: Other Terms
content: Instructograph; Equipment; Telegraphy; Communications
physicalDescription: label: Physical Description
content: metal (overall material)
label: Physical Description
content: bakelite (overall material)
label: Physical Description
content: paper (overall material)
label: Physical Description
content: leather (overall material)
label: Measurements
content: with handle: 7 1/2 in x 14 1/2 in x 8 in; 19.05 cm x 36.83 cm x 20.32 cm