either of the two fine mutually perpendicular lines or wires that cross in the focal plane of a theodolite, gunsight, or other optical instrument and are used to define the line of sight
Also called: crosswire
Examples of 'crosshair' in a sentence
crosshair
Participants were first shown a blank slide with a crosshair to focus attention.
Kate Kelly 2010, 'Consumer Health Information Websites with High Visual Design Ratings Likely to Bealso Highly Rated for Perceived Credibility. A Review of: Robins, D., Holmes, J.,& Stansbury, M. (2010). Consumer health information on the web: The relationship ofvisual design and perceptions of credibility. Journal of the American Society forInformation Science and Technology, 61(1), 13-19.', Evidence Based Library and Information Practicehttp://ejournals.library.ualberta.ca/index.php/EBLIP/article/view/8534/7346. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Participants were instructed to fixate on a central crosshair and to selectively attend to their left or right hand.
Katsumi Minakata, Wolfgang A Teder 2011, 'A Multi-Technique Source Localization Approach of “Tactile” Lasers in Peri-PersonalSpace', i-Perceptionhttps://doi.org/10.1068/ic845. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)