49 kHz wristwatch crystal units
date: label: Date made
content: 1968-70
name: label: maker
content: CTS-Knights
notes: label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Mechanisms
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2002.0302.04
label: catalog number
content: 2002.0302.04
label: accession number
content: 2002.0302
objectType: label: Object Name
content: Prototype & uncovered sample, crystal unit
physicalDescription: label: Measurements
content: overall; a - from catalog card: .9 cm x 1.8 cm x .2 cm; 11/32 in x 23/32 in x 3/32 in
label: Measurements
content: overall; b - from catalog card: 1 cm x 1.9 cm x .3 cm; 13/32 in x 3/4 in x 1/8 in
label: Measurements
content: overall; c - from catalog card: .5 cm x 1.8 cm x .5 cm; 3/16 in x 23/32 in x 3/16 in
label: Measurements
content: overall -a: 3/8 in x 3/4 in x 1/8 in; .9525 cm x 1.905 cm x .3175 cm
label: Measurements
content: overall - b: 3/8 in x 3/4 in x 1/8 in; .9525 cm x 1.905 cm x .3175 cm
label: Measurements
content: overall - c: 1/4 in x 3/4 in x 1/8 in; .635 cm x 1.905 cm x .3175 cm