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Meanings of cross-staff in English

Russian
градшток
Portuguese
balestilha
Spanish
palo de jacob
Catalan
vara de jacob
Wikidata

Calibrated wooden rod with sliding crosspiece used for measuring the altitude of celestial bodies or the height of distant objects.

градшток
Synonyms
Examples for "fore-staff"
Examples for "fore-staff"
1
The jibs, the brigantine, the fore-staff, and the stay-sails are easily managed.
Dick Sand: A Captain at Fifteen
2
Behind, the perimeter of the horizon was broken to their eyes, only by the mainmast, carrying brigantine and fore-staff.
Dick Sand: A Captain at Fifteen
3
The question now was to get under full sail, and, to complete the sails, to hoist the top-sails, the royal, the fore-staff, and the stay-sails.
Dick Sand: A Captain at Fifteen
1
The bear again disappeared, taking the Jacob's staff, and appeared no more that night.
Bears I Have Met—and Others
2
7 And in his hand a Jacob's staff, to stay
The Faerie Queene — Volume 01
Usage of cross-staff in English
1
Boy, bring up my cross-staff, and be mindful that you do not strike it against anything as you come up.
The Phantom Ship
2
A man upon the frame-work controls this wheel, guided by a sight on the frame, and a cross-staff at the end of the field.
Farm drainage / The Principles, Processes, and Effects of Draini...
3
No doubt the cross-staff is a very primitive contrivance, but when handled by one so skilful as Tycho it afforded results of considerable accuracy.
Great Astronomers
4
Got Gordon to make a dozen cross-staffs and started for it to take levels.
The Narrative of Gordon Sellar Who Emigrated to Canada in 1825