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bn:03872806n
Noun Concept
Categories: Measuring instruments, Wikipedia articles incorporating a citation from the 1728 Cyclopaedia, Wikipedia articles incorporating a citation from the 1728 Cyclopaedia without an article title parameter, Astronomical instruments, Navigational equipment
EN
backstaff  Back-quadrant  back-staff  Back quadrant  Back staff  plough
EN
The backstaff is a navigational instrument that was used to measure the altitude of a celestial body, in particular the sun or moon. Wikipedia
Definitions
Relations
Sources
EN
The backstaff is a navigational instrument that was used to measure the altitude of a celestial body, in particular the sun or moon. Wikipedia
An early navigational instrument for measuring the altitude of the sun and hence calculating latitude. Wiktionary
IS A
navigational instrument
DISCOVERER OR INVENTOR
Davys
USE
celestial navigation
Wikipedia
EN
backstaff
Wikidata
EN
Backstaff
Wiktionary
EN
backstaff
Wikipedia Redirections
EN
Back-quadrant, back-staff, Back quadrant, Back staff, Cole's quadrant, cross bow quadrant, Davis quadrant, demi-cross, Hood's cross-staff, plough (instrument)
Wikidata Alias
EN
Backstaff dial, Davis quadrant, English Quadrant

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