McIntosh milliammeter
date: label: date made
content: c 1895
label: date made
content: ca 1895
name: label: maker
content: MacIntosh Electrical Corp.
notes: label: Description (Brief)
content: Marked: "McIntosh / B & O Co. Chicago / Pat. Oct. 6, '91 / Milliammeter". Unit employs standard round-type meter construction. Two scales are used: an A scale has readings of 0-1000, and a B scale readings of 0-20. A compass type needle has one end tipped black. The needle is essentially a double section type with the lower end pivoted between two galvanometer type coils. A needle lock lever is located on side of unit. Three binding posts marked A, B, and C connect to external circuit. Three leveling screws are spaced around wooden base. Unit is in original case.
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.320835
label: catalog number
content: 320835
label: accession number
content: 241556
objectType: label: Object Name
content: ammeter
label: Object Name
content: milliammeter
physicalDescription: label: Measurements
content: overall: 2 in x 5 1/4 in; x 5.08 cm x 13.335 cm