Marco vernier radio dial in box
date: label: date made
content: 1927
label: associated date
content: 1927
notes: label: Description (Brief)
content: A plastic housing with graduated scale seem through three ports. Knob on front actuates scale. Brass acorn nut at center holds the unit together. Knob rotates a brass post that turns a brass plate, friction connection. Stamped on back: "Patented / Nov.17,1925 - Aug.10,1926 / Other Patents Pending"; on back of scale: "Patented / Feb.22, 1927." Box reads: "Mar-co / Radio / Products / Genuine Bakelite / Non Microphonic / No Backlash". Manufacture: Martin-Copeland Co., Providence, RI. Inc. 4" vernier dial with original box and instruction sheet.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.323323
label: catalog number
content: 323323
label: accession number
content: 241556
objectType: label: Object Name
content: Radio Tuning Dial
label: Object Name
content: radio dial
label: Other Terms
content: Radio Tuning Dial; Components; Radio and Television; Radio and Television
physicalDescription: label: Measurements
content: dial only: 1 1/2 in x 4 in; 3.81 cm x 10.16 cm
label: Measurements
content: box: 4 1/8 in x 4 1/4 in x 1 3/8 in; 10.4775 cm x 10.795 cm x 3.4925 cm