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Position Micrometer

National Museum of American History

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Object Details

Kahler, Edward
Description
This divided-lens micrometer was made in the early 1870s, for use with the 26-inch refracting telescope at the United States Naval Observatory. A paper label on the box reads “Edw. Kahler / Manufacturer of Optical, Mathematical and Philosophical Instruments / 1807 K St. NW / Washington, D.C.” Edward Kahler (1833-1900) was a German instrument maker who was working in Washington by 1869.
Ref: United States Naval Observatory, Astronomical and Meteorological Observations Made During the Year 1874 (Washington, D.C., 1877), Appendix 1, “Instruments and Publications,” p. 38.
Location
Currently not on view
Credit Line
U.S. Naval Observatory
early 1870s
ID Number
2005.0172.14
accession number
2005.0172
catalog number
2005.0172.14
Object Name
Position Micrometer
Measurements
overall: 2 3/4 in x 5 3/8 in x 2 1/4 in; 6.985 cm x 13.716 cm x 5.715 cm
overall in box: 2 15/16 in x 5 3/8 in x 2 1/4 in; 7.46125 cm x 13.6525 cm x 5.715 cm
place made
United States: District of Columbia, Washington
See more items in
Medicine and Science: Physical Sciences
National Museum of American History
subject
Science & Scientific Instruments
Record ID
nmah_1293539
Metadata Usage (text)
CC0
GUID (Link to Original Record)
http://n2t.net/ark:/65665/ng49ca746ab-b8de-704b-e053-15f76fa0b4fa
There are restrictions for re-using this image. For more information, visit the Smithsonian's Terms of Use page .
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