Mahn Surveyor's Vernier Compass
Mahn Surveyor's Vernier Compass
Previous
Next
Usage conditions apply
- Description
- This surveyor's compass marked "Mahn & Co. St. Louis, Mo." dates from the period 1891-1906 when Herman Mahn was trading as such. It has a variation arc on the south arm that extends 24 degrees either way. The vernier is moved by a tangent screw on the south arm, and reads to 2 minutes. An outkeeper is on the south arm, and two level vials are on the north arm.
- Location
- Currently not on view
- Object Name
- Surveyor's Compass
- date made
- 1891-1906
- maker
- Mahn, Herman
- place made
- United States: Missouri, St. Louis
- Measurements
- overall length: 15 1/2 in; 39.37 cm
- needle: 5 1/8 in; 13.0175 cm
- overall in case: 4 7/8 in x 16 1/2 in x 7 5/8 in; 12.3825 cm x 41.91 cm x 19.3675 cm
- ID Number
- PH.333650
- catalog number
- 333650
- accession number
- 300659
- Credit Line
- University of Missouri at Columbia.
- See more items in
- Medicine and Science: Physical Sciences
- Measuring & Mapping
- Surveying and Geodesy
- Data Source
- National Museum of American History
Nominate this object for photography.
Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.
If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.
