Hand or Bladder Glass
notes: label: Description
content: This swelled glass vessel open at both ends is designed for tactile experience of air pressure. In use, the larger end is placed on the plate of an air pump, the observer’s hand is placed on the smaller end, and the air is pumped out. Or, the smaller end can be placed on the plate, and the larger end covered with a bladder of some sort.
label: Description
content: Ref: Benjamin Pike, Jr., Illustrated Descriptive Catalogue of Optical, Mathematical and Philosophical Instruments (New York, 1848), vol. 2, pp. 201-202.
label: Location
content: Currently not on view
setName: label: See more items in
content: Medicine and Science: Physical Sciences
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.315401.17
label: catalog number
content: 315401.17
label: accession number
content: 219414
objectType: label: Object Name
content: bladder glass
physicalDescription: label: Measurements
content: overall: 5 in x 6 3/4 in; 12.7 cm x 17.145 cm
label: Measurements
content: overall: 4 3/4 in x 7 1/2 in; 12.065 cm x 19.05 cm