Meaning Cross staff
What does Cross staff mean? Here you find 2 meanings of the word Cross staff. You can also add a definition of Cross staff yourself
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Cross staffA cross-shaped device to measure the elevation of the Sun or a star above the horizon, or the angle between the directions of two heavenly objects. The staff is aimed halfway between the objects, then [..]
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Cross staffA relatively accurate tool used in celestial navigation since the early 16th century, it consisted of a scaled wooden staff or rod with one or more sliding perpendicular 'transoms' with whic [..]
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