Course Indicator

Course Indicator

<< >>
Usage conditions apply
The inscription on this instrument reads "BAIN & AINSLEY’S ‘HA-HY’ COURSE CORRECTOR PAT. NO 2345 SOLD BY A. DOBBIE & SON LTD GLASGOW & SO SHIELDS." A label in the box reads "Thos. L. Ainsley, James Street, Cardiff. HEATH & COY., Limited, Crawford, Kent." A tag reads "H.M.S. ADMIRALTY SERVICE."
A. Dobbie & Son, Ltd., were in business from 1896 to 1903, offering chronometers and other instruments for nautical use.
Ref: Ref: “Bain & Ainsley’s ‘HA-HY’ Course Corrector,” The Marine Engineer (May 1, 1895): 62.
T. N. Clarke, A. D. Morrison-Low, and A. D. C. Simpson, Brass & Glass. Scientific Instrument Making Workshops in Scotland (National Museums of Scotland, 1989), pp. 228-234.
Currently not on view
Object Name
course indicator
date made
ca 1900
Dobie, James
place made
United Kingdom: Scotland, Glasgow
compass box without lid: 5 9/16 in x 10 1/2 in x 10 1/2 in; 14.12875 cm x 26.67 cm x 26.6954 cm
top lid: 1 13/16 in x 11 1/8 in x 10 1/2 in; 4.60375 cm x 28.2575 cm x 26.67 cm
overall: 7 1/2 in x 11 1/8 in x 10 1/2 in; 19.05 cm x 28.2575 cm x 26.67 cm
ID Number
catalog number
accession number
See more items in
Medicine and Science: Physical Sciences
Measuring & Mapping
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.


Add a comment about this object