Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Backstaff> ?p ?o }
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- Backstaff abstract "The backstaff is a navigational instrument that was used to measure the altitude of a celestial body, in particular the sun or moon. When observing the sun, users kept the sun to their back (hence the name) and observed the shadow cast by the upper vane on a horizon vane.It was invented by the English navigator John Davis who described it in his book Seaman's Secrets in 1594.".
- Backstaff thumbnail Davis_quadrant_4.jpg?width=300.
- Backstaff wikiPageExternalLink HistSciTech-idx?type=turn&entity=HistSciTech000900240225&isize=L.
- Backstaff wikiPageExternalLink backstaff?cat=technology.
- Backstaff wikiPageID "974163".
- Backstaff wikiPageLength "17392".
- Backstaff wikiPageOutDegree "46".
- Backstaff wikiPageRevisionID "653614611".
- Backstaff wikiPageWikiLink Almucantar.
- Backstaff wikiPageWikiLink Benjamin_Cole_(instrument_maker).
- Backstaff wikiPageWikiLink Category:Astronomical_instruments.
- Backstaff wikiPageWikiLink Category:Celestial_navigation.
- Backstaff wikiPageWikiLink Category:Historical_scientific_instruments.
- Backstaff wikiPageWikiLink Category:Measuring_instruments.
- Backstaff wikiPageWikiLink Category:Navigational_equipment.
- Backstaff wikiPageWikiLink Celestial_coordinate_system.
- Backstaff wikiPageWikiLink Cross-staff.
- Backstaff wikiPageWikiLink Crossbow.
- Backstaff wikiPageWikiLink Edmund_Gunter.
- Backstaff wikiPageWikiLink Eltons_quadrant.
- Backstaff wikiPageWikiLink George_Adams_(instrument_maker,_elder).
- Backstaff wikiPageWikiLink George_Adams_(optician).
- Backstaff wikiPageWikiLink Jacobs_staff.
- Backstaff wikiPageWikiLink John_Davis_(English_explorer).
- Backstaff wikiPageWikiLink John_Flamsteed.
- Backstaff wikiPageWikiLink Mariners_astrolabe.
- Backstaff wikiPageWikiLink Navigation.
- Backstaff wikiPageWikiLink Octant_(instrument).
- Backstaff wikiPageWikiLink Position_of_the_Sun.
- Backstaff wikiPageWikiLink Quadrant_(instrument).
- Backstaff wikiPageWikiLink Spirit_level.
- Backstaff wikiPageWikiLink Thomas_Harriot.
- Backstaff wikiPageWikiLink Thomas_Hood_(mathematician).
- Backstaff wikiPageWikiLink Transversal_(instrument_making).
- Backstaff wikiPageWikiLink Vernier_scale.
- Backstaff wikiPageWikiLink Wiktionary:Limb.
- Backstaff wikiPageWikiLink File:Cole-quadrant.png.
- Backstaff wikiPageWikiLink File:Cross-bow-quadrant.png.
- Backstaff wikiPageWikiLink File:Davis-precursor-2.png.
- Backstaff wikiPageWikiLink File:Davis-precursor.png.
- Backstaff wikiPageWikiLink File:Davis-quadrant.png.
- Backstaff wikiPageWikiLink File:Davis_quadrant_4.jpg.
- Backstaff wikiPageWikiLink File:Demi-cross.png.
- Backstaff wikiPageWikiLink File:Hood-cross_staff.png.
- Backstaff wikiPageWikiLink File:The_plough_instrument.svg.
- Backstaff wikiPageWikiLinkText "Backstaff".
- Backstaff wikiPageWikiLinkText "Backstaff#Benjamin Cole quadrant".
- Backstaff wikiPageWikiLinkText "Backstaff#Cross bow quadrant".
- Backstaff wikiPageWikiLinkText "Backstaff#Davis quadrant".
- Backstaff wikiPageWikiLinkText "Backstaff#Demi-cross".
- Backstaff wikiPageWikiLinkText "Backstaff#The plough".
- Backstaff wikiPageWikiLinkText "Backstaff#Thomas Hood cross-staff".
- Backstaff wikiPageWikiLinkText "Davis quadrant".
- Backstaff wikiPageWikiLinkText "backstaff dial".
- Backstaff wikiPageWikiLinkText "backstaff".
- Backstaff wikiPageWikiLinkText "backstaves".
- Backstaff wikiPageWikiLinkText "bow".
- Backstaff hasPhotoCollection Backstaff.
- Backstaff wikiPageUsesTemplate Template:1728.
- Backstaff wikiPageUsesTemplate Template:Distinguish.
- Backstaff wikiPageUsesTemplate Template:Main.
- Backstaff wikiPageUsesTemplate Template:Reflist.
- Backstaff wikiPageUsesTemplate Template:Use_dmy_dates.
- Backstaff subject Category:Astronomical_instruments.
- Backstaff subject Category:Celestial_navigation.
- Backstaff subject Category:Historical_scientific_instruments.
- Backstaff subject Category:Measuring_instruments.
- Backstaff subject Category:Navigational_equipment.
- Backstaff hypernym Instrument.
- Backstaff type Agent.
- Backstaff type Instrument.
- Backstaff type Work.
- Backstaff type Instrument.
- Backstaff type Source.
- Backstaff type Tool.
- Backstaff type Work.
- Backstaff type Thing.
- Backstaff comment "The backstaff is a navigational instrument that was used to measure the altitude of a celestial body, in particular the sun or moon. When observing the sun, users kept the sun to their back (hence the name) and observed the shadow cast by the upper vane on a horizon vane.It was invented by the English navigator John Davis who described it in his book Seaman's Secrets in 1594.".
- Backstaff label "Backstaff".
- Backstaff differentFrom Jacobs_staff.
- Backstaff sameAs Quadrant_de_Davis.
- Backstaff sameAs Cuadrante_de_Davis.
- Backstaff sameAs Quartier_de_Davis.
- Backstaff sameAs Quadrante_de_Davis.
- Backstaff sameAs m.03vs2s.
- Backstaff sameAs Q3298443.
- Backstaff sameAs Q3298443.
- Backstaff wasDerivedFrom Backstaff?oldid=653614611.
- Backstaff depiction Davis_quadrant_4.jpg.
- Backstaff isPrimaryTopicOf Backstaff.