cross hair
or crosshair
Also called cross wire . one of the fine wires or fibers, strands of spider web, or the like, crossing in a focal plane of an optical instrument to center a target or object or to define a line of sight.
one of the marks that aid in the positioning of overlaying images for correct registration in printing.: Compare register (def. 11b).
Origin of cross hair
1Words Nearby cross hair
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use cross hair in a sentence
After the cross-hair indicators and the level have been attached to the camera, adjustments are necessary.
The Boy Mechanic, Book 2 | VariousIf not, the difference, or "error," is found between the two vertical distances from the cross hair to the two stake tops.
The Boy Mechanic, Book 2 | VariousAll that remains is to make the horizontal cross hair parallel with the cross level.
The Boy Mechanic, Book 2 | VariousThe "radius of measurement" is the distance between the front face of the revolving mirror and the cross-hair of the micrometer.
Experimental Determination of the Velocity of Light | Albert A. MichelsonThen the screw was turned till the cross-hair bisected the deflected image of the slit.
Experimental Determination of the Velocity of Light | Albert A. Michelson
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