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graticule
(redirected from graticules)

   Also found in: Dictionary/thesaurus, Encyclopedia 0.01 sec.
graticule
Graduated transparent scale engraved or photographed, placed in the front focal plane of the eyepiece of an optical instrument for direct observation of the apparent image size or position in the field of view. Example: the focusing screen of a focimeter. Syn. reticule.


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Equipment--There are many types of scopes available for viewing the Brinell impression, but it is recommended that you use one that has sufficient magnification to clearly show the graticules markings.
The Whitehouse method involves the certification of a master set of slotted sieves using a microscope and image analysis calibrated against NIST and NPL reference graticules.
Full military specifications now include headings such as shockproof housings, artillery observation mil graticules, laser-proof eye protection filters, and sealed interiors filled with nitrogen to keep out the insidious moisture that will fog optical surfaces.
 
 
 
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