control board for Rogers system
name: label: maker
content: Rogers Research Laboratory
notes: label: Description (Brief)
content: For Rogers Visual Synchronizing System. #7 of 8 pieces of apparatus, patented 1887-1890. G: Control board on which are mounted 1 polarizing relay, 1 fuse block, 1 choke coil, 1 common relay; on the bottom of this board are mounted 1 porcelain sockets.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from James C. Rogers
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.309852G
label: accession number
content: 110134
label: catalog number
content: 309852G
objectType: label: Object Name
content: control board
label: Object Name
content: signaling device component