Smithsonian - National Museum of American History, Behring Center

 
Physical Sciences Collection - Navigation

Browse Makers | Browse Instruments | Index

Back
 

Box Sextant - click to enlarge

Box Sextant - click to enlarge

Box Sextant - click to enlarge

Click image to enlarge.

Box Sextant

Catalogue number:
PH*328762

Inscriptions:
"Adie, London"

Dimensions:
diameter 3.25 inches

Discussion:
This has a silvered scale that is graduated every 30 minutes from -3o to +150o and read by vernier with swinging magnifier to single minutes of arc. Patrick Adie was in business in London from 1848 to 1886. His father was a famous instrument maker in Edinburgh.

Ref: Gloria Clifton, Directory of British Scientific Instrument Makers 1550-1851 (London, 1995), p. 4.

Further Information:

Box Sextant

Back