Readrite type AA tube tester
date: label: date made
content: ca 1925
notes: label: Description (Brief)
content: Marked: box: "Readrite / No. 201 Type AA / Tube Tester / For Home Use / Mfgd. by / Readrite Meter Works / Estb. 1904 / Bluffton, Ohio"; on unit: "Poor Fair Good / First Read / Instructions on Bottom / Made By / Readrite Meter Works". A tube tester for type 201-A and 171 tubes in original box. Unit is in two sections: a plug-in meter with three- step scale, and a 3" diameter base with meter brackets and a socket for testing the tube. The 4-prong plug from this unit is connected via a 22" long cord to a stage socket having 67 volts of more of "B" battery potential. The meter is placed in bracket "A" and calibrated with the radio set's filament rheostat. The meter is then placed into bracket "B" and the condition of the tube is read from the scale. Reference: Instructions on box and on unit.
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.322015
label: catalog number
content: 322015
label: accession number
content: 241556
objectType: label: Object Name
content: vacuum tube tester
label: Object Name
content: tube tester
physicalDescription: label: Measurements
content: overall: 3 in x 4 in x 3 in; 7.62 cm x 10.16 cm x 7.62 cm