cross hair


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cross hair

or cross·hair (krôs′hâr′, krŏs′-)
n.
Either of two fine strands of wire crossed in the focus of the eyepiece of an optical instrument and used as a calibration or sighting reference.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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 calibrationcross 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; "he had the target in his cross hairs"
graticule, reticle, reticule - a network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument
line - a mark that is long relative to its width; "He drew a line on the chart"
References in periodicals archive ?
A superimposed cross hair shows exactly where the shot string is traveling in full HD 1080p video.
When aimed at the Sun, it projects a beautiful cross hair on the end cap.
Repairing & Servicing of Autolevels (Temporary adjustment (Level screw, tribach plate & trivet plate), Permanent adjustment, Line of collimation, Line of sight, Visibility of cross hair on reticule, Focusing of eyepiece and objective lenses, Removal of parallax, Bubble in spirit level, Horizontal tangent screw, Focusing knob, Removal of zero error in horizontal circle gradation, Compensator mechanism (pendulum prism) etc)
In this paper, we compare the outcomes of advanced Parkinson's disease (PD) patients at our center who received frame-based DBS surgery involving the use of a cross hair with those for patients who received the surgery without the application of the cross hair.
The radiation patterns in case of Swastika type EBG appear to be more stable and smooth in comparison to those obtained with Cross Hair type and Mushroom type EBGs.
The holdover points on the lower cross hair put you on target at 50- or 100-yard increments beyond 100 yards.
To create the Dutch braid, cross hair under the center section as you go (instead of over like you would for a regular braid).
As the enemy soldier brought me into his gun's cross hair,
In the case of line and a turn to the left, the points should be to the right of the cross hair on the horizontal centerline of the target, Vidovic continues.
The measurement spot is visible through an ocular viewfinder with a cross hair targeting aid, making alignment simple over a useable measurement distance from 0.
Hole size is adjustable from 1/2"- 8", and centers are found with a cross hair sight gage.
The cross hair thickness ratio (CHR) = thickness of the cross hair divided by the magnification.