Synchro-Clock
name: label: maker
content: General Radio Company
notes: label: Description
content: The inscriptions on this chronometer read "General Radio Company" and "Synchro-Clock Type 611-A." The 1935 General Radio Co. catalog described this as a "Standard Frequency Assembly, the synchronous-motor-driven clock is the counting device for totalizing the number of vibrations of the crystal in any given time interval." In other words, with the crystal as a stable oscillator this device could be used as a source of time intervals, such as generating timed electrical pulses. Conversely, by comparing it with standard time the same oscillator could be used as a measure of frequency.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
creditLine: label: Credit Line
content: Columbia University
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2001.0162.02
label: catalog number
content: 2001.0162.02
label: accession number
content: 2001.0162
objectType: label: Object Name
content: chronometer, "synchro-clock"
physicalDescription: label: Measurements
content: overall: 19 cm x 27.5 cm x 25 cm; 7 15/32 in x 10 13/16 in x 9 27/32 in
label: Measurements
content: overall: 7 3/8 in x 10 3/4 in x 10 in; 18.7325 cm x 27.305 cm x 25.4 cm