Dayrad type B vacuum tube tester
date: label: date made
content: ca 1928
name: label: maker
content: Radio Products Company
notes: label: Description (Brief)
content: Marked: "DAYRAD Tube Checker / Mfd. by the Radio Products Co., Dayton, Ohio. / Licensed Under Weston Patent 1704566 Type B". Includes leather carrying strap. Tube tester designed for A.C. plug in operation, and containing a 0-20 D.C. millimeter. Four tube sockets accommodate the following vacuum tubes: UX-199, UX-120, UX-245, UX-222, UY-227, UY-224, UX-112, UX-171, UX-201A, UX-210, UX-280, UX-281, UX-240, UX-250, UX-226, and UX-12. Tube label on bakelite panel gives proper plate current reading for tubes tested, Push buttons allows selection of SHUNT, GRID, Difference and Screen Grid Test functions.
label: Location
content: Currently not on view
place: label: place made
content: United States: Ohio, Dayton
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.321498
label: accession number
content: 241556
label: catalog number
content: 321498
label: patent number
content: 1704566
objectType: label: Object Name
content: tube tester
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 6 3/4 in x 2 1/16 in; 13.335 cm x 17.145 cm x 5.23875 cm