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49 kHz wristwatch crystal units

49 kHz wristwatch crystal units

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Location
Currently not on view
Object Name
Prototype & uncovered sample, crystal unit
Date made
1968-70
maker
CTS-Knights
Measurements
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
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
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
overall -a: 3/8 in x 3/4 in x 1/8 in;.9525 cm x 1.905 cm x.3175 cm
overall - b: 3/8 in x 3/4 in x 1/8 in;.9525 cm x 1.905 cm x.3175 cm
overall - c: 1/4 in x 3/4 in x 1/8 in;.635 cm x 1.905 cm x.3175 cm
ID Number
2002.0302.04
catalog number
2002.0302.04
accession number
2002.0302
See more items in
Work and Industry: Mechanisms
Data Source
National Museum of American History
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