cross hair


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cross hair

[′krȯs ‚her]
(engineering)
An inscribed line or a strand of hair, wire, silk, or the like used in an optical sight, transit, or similar instrument for accurate sighting.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Regarding the scores for Part II, quality-of-life showed that the outcome tends to improve more in the cross hair group, though no statistical significance was shown [[Figure 1]a, one-way ANOVA with F = 2.38, followed by Bonferroni's post-hoc test, P = 0.08 in the noncross hair difference vs.
For instance, if the change is to be a gradual but continuing negative change in grade, the target would consist of a set of cross hairs as well as points directly above the cross hairs on the vertical centerline of the target representing the place the target should be at certain predetermined stations."
The cross hair thickness ratio (CHR) = thickness of the cross hair divided by the magnification.
Shooting from a solid rest, fire one shot with the cross hair carefully centered on the bull's-eye.
He may be a crack shot with his .22-250 on prairie dogs at 300 yards with a 10X scope and fine cross hair. But if he tries the same scope on brush-country whitetails, where a long shot might be 70 yards, he would lose a lot of shots since the field of view of a lox scope is so small, and the fine cross hair can easily be lost in the brush.
Although we will be fed the usual images of computer cross hairs on targets, what you will not see is the fear on the face of the pilot as he struggles to control his aircraft under the onslaught of enemy fire.
The distance from the central horizontal cross hair to the range marker bars is two, five, 7 1/2 and 10 1/2 inches at 100 yards.
Are you comfortable shooting when the cross hair is moving?
"The services covered are ones where US firms are global leaders," the US Trade Representative's office said in a statement, adding that statements by French leaders have further bolstered the idea that US firms are in the cross hairs
IN THE CROSS HAIRS: Licences can be granted for specific purposes such as preventing spread of disease or preventing damage to forestry