valve check ball

valve check ball

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Currently not on view
Object Name
Valve Check Ball
Associated Place
United States: New Jersey
Physical Description
bakelite laminating varnish and fabric (overall material)
overall: 80 mm; x 3 1/8 in
overall: 3 1/4 in; 8.255 cm
ID Number
catalog number
accession number
Credit Line
Gift of Plastics Institute of America
See more items in
Medicine and Science: Chemistry
Data Source
National Museum of American History
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