John Bruce & Son Sextant

Description
This sextant belonged to Haverford College, and probably dates from the second half of the 19th century. The frame is brass. The silvered scale is graduated every 15 minutes from -5° to +130° and read by vernier with tangent screw and swinging magnifier to single minutes of arc. The arc is engraved "JOHN BRUCE & SON, Liverpool."
Location
Currently not on view
date made
mid 19th century
maker
John Bruce & Son
place made
United Kingdom: England, Liverpool
Physical Description
mahogany (overall material)
silver (overall material)
brass (overall material)
glass (overall material)
Measurements
radius: 7 1/4 in; 18.415 cm
overall: 4 7/8 in x 10 3/4 in x 9 3/4 in; 12.3825 cm x 27.305 cm x 24.765 cm
ID Number
1981.0745.07
catalog number
1981.0745.07
accession number
1981.0745
Credit Line
Haverford College
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
Navigation
Data Source
National Museum of American History, Kenneth E. Behring Center

Comments

Add a comment about this object