Micrometer
date: label: date made
content: 1874
name: label: maker
content: Alvan Clark & Sons
notes: label: Description
content: In an effort to get a better fix on the distance between the Earth and the Sun, the United States sponsored and equipped eight parties to observe the 1874 transit of Venus across the face of the sun. This split lens micrometer, #863, is part of that equipment. It was made by Alvan Clark & Sons, and used with a 5-inch aperture refracting telescope also made by that firm.
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: 2005.0172.09
label: accession number
content: 2005.0172
label: catalog number
content: 2005.0172.09
objectType: label: Object Name
content: Eyepiece micrometer, divided lens
physicalDescription: label: Measurements
content: overall: 7 1/2 in x 4 1/2 in x 3 3/4 in; 19.05 cm x 11.43 cm x 9.525 cm
label: Measurements
content: overall: 7 1/4 in x 4 5/8 in x 3 3/4 in; 18.415 cm x 11.7475 cm x 9.525 cm