KnowraCross-staffLinked fromLinked fromThe 6 pages that link to Cross-staff, each with the reason it gives.All 6Related 3Compared with 3Celestial navigationRelated: It was an early tool for measuring the angular heights used in navigation.AstrolabeCompared with: It offers a simpler sighting method without the astrolabe’s layered computational model.SextantCompared with: Unlike the sextant's reflected image, it requires direct alignment that can strain the eye.BackstaffCompared with: The backstaff grew from the cross-staff tradition but replaced direct solar sighting with shadow alignment.Edmund GunterRelated: It belongs to the instrument-making tradition Gunter applied to surveying and navigation.Jacob’s staffRelated: This common name emphasizes the staff-and-transom arrangement used in the same measuring principle.