Course Indicator
date: label: date made
content: ca 1900
name: label: maker
content: Dobie, James
notes: label: Description
content: Navigators use course correctors to determine the compass error, or deviation relative to earth’s magnetic variation, in order to correct a ship’s nautical course or bearing. The inscription on this example 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."
label: Description
content: A. Dobbie & Son, Ltd., were in business from 1896 to 1903, offering chronometers and other instruments for nautical use.
label: Description
content: Ref: Ref: “Bain & Ainsley’s ‘HA-HY’ Course Corrector,” <i>The Marine Engineer</i> (May 1, 1895): 62.
label: Description
content: T. N. Clarke, A. D. Morrison-Low, and A. D. C. Simpson, <i>Brass & Glass. Scientific Instrument Making Workshops in Scotland</i> (National Museums of Scotland, 1989), pp. 228-234.
label: Location
content: Currently not on view
place: label: place made
content: United Kingdom: Scotland, Glasgow
setName: label: See more items in
content: Medicine and Science: Physical Sciences
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content: Navigation
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content: Measuring & Mapping
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: PH.337211
label: catalog number
content: 337211
label: accession number
content: 1979.0825
objectType: label: Object Name
content: course indicator
physicalDescription: label: Measurements
content: 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
label: Measurements
content: 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
label: Measurements
content: 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