cross hair


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Synonyms for cross hair

either of two fine mutually perpendicular lines that cross in the focus plane of an optical instrument and are use for sighting or calibration

References in periodicals archive ?
sup][10] Then, the patients were classified into the cross hair and noncross hair application group according to their admission time (the patient that admitted into the ward before March, 2000 received the surgery with noncross hair application and those admission after March, 2000 received the surgery with cross hair application).
In the case of line and grade being straight and horizontal with no change, imagine a set of cross hairs on a target that is placed in the steerable section of the cutting head," explains Vidovic.
For example, the cross hair thickness is estimated at 0.
One of the mining firms in the cross hair of the Department of Environment and Natural Resources (DENR) has been spending the last four years trying to meet the DENR's standards in the hope of reopening its mine in Surigao del Sur province.
Open, have put her squarely in the cross hair of the fashion police.
Bushnell and others make collimators that have a spud for shotgun bores or you can pull the bolt from a bolt-action slug gun, put it in a solid rest, then center the bare on a target at 50 yards and adjust the cross hair to the center of the target.
Each front cross hair has a corresponding rear cross hair that, when superimposed, defines one sighting point for a given range.
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.
You will not see the hands of the female navigator shake as she tries to control that cross hair on the target as she watches missiles fly towards her.
His primary innovations were to provide a movable and sizable focus window that can be anywhere in the CCD field and to include a cross hair in the window so that the telescope can be guided manually while you're watching the monitor instead of using a reticle eyepiece.
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.
On the bench, you are working to get the cross hair exactly on the precise point where you want the bullet, and you won't pull the trigger if the cross hair is so much as a half-inch off.
The Mil-Dot reticle is similar to a regular cross hair but with the addition of four oval dots radiating from the center.
If you use a double or dual cross hair, the guidestar can be placed at any of the four intersection points or defocused to nearly fill the small central square.