Model A tuned-reed aircraft navigational indicator
name: label: associated user
content: unknown
label: associated institution
content: Bureau of Standards
notes: label: Description (Brief)
content: An aluminum housing mounted on an aluminum base plate with four vibration-damping springs. A pin-socket connector is on the front along with a retaining clamp and two controls. One control is labeled: "Increase / Low. Freq. / ----->", the other is labeled: "Sharpen / ------> / Sharpen / ------->". Schematic on top shows wiring diagram. Etched markings on top above the schematic will require high magnification to read. Cover can be removed to access the internal mechanisms which includes a Centralab variable resistance ("increase") and an Electrad variable resistance ("sharper"). Data on two labels along with "A" and "B" labels for connectors. Tag reads: "113 / X Reed converter / Bureau of Standards Model A".
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from the United States Bureau of Standards, Dept. of Commerce
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.313608
label: catalog number
content: 313608
label: accession number
content: 188571
objectType: label: Object Name
content: Indicator, Aircraft Navigation
label: Object Name
content: aircraft instrument
label: Other Terms
content: Indicator, Aircraft Navigation; Components; Radio and Television; Radio and Television
physicalDescription: label: Measurements
content: overall: 5 in x 10 1/4 in x 7 1/4 in; 12.7 cm x 26.035 cm x 18.415 cm