Cameras outfitted with reseau plates produce these reference marks (also called reseau crosses) and are commonly used by NASA.
Chris Marker | marker | Little Miss Marker | Marker | Marker (TV series) | Cardiac marker | Boundary marker | Vic Marker | Taimah's grave marker, near, Kingston, Iowa | Steve Marker | Sign on Stetson Kennedy's residence erected consequent to the 2003 designation of Beluthahatchee as a Literary Landmark, No. 83 in the National Register. (An additional marker, in Kennedy's name, was also approved, to be erected following his demise.) | Raised pavement marker | Molecular marker | Max & the Magic Marker | Marker (linguistics) | Marker (alpine bindings) | Historical marker of Helena's second location, in Tower Hill State Park | Historical marker | Genetic marker | Foxhunter's grave marker around which Llewellyn's ashes were scattered | Corpse Marker |