Filar Micrometer

Filar Micrometer

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Description
This filar micrometer was used at the U.S. Naval Observatory. The inscription reads “GAERTNER / GAERTNER SCIENTIFIC CORPORATION / CHICAGO, U.S.A.”
Location
Currently not on view
Object Name
eyepiece micrometer
filar micrometer
Measurements
overall: 2 3/4 in x 3 in x 1 1/2 in; 6.985 cm x 7.62 cm x 3.81 cm
overall: 2 7/8 in x 3 1/4 in x 1 7/16 in; 7.3025 cm x 8.255 cm x 3.65125 cm
ID Number
2005.3085.10
nonaccession number
2005.3085
catalog number
2005.3085.10
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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