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Our PT90 Series of targets puts a retroreflective dot at a known distance from the interface surface.  Use this target with photogrammetry systems to measure features of interest, or with our Invar systems to construct reference lengths for system calibration.  Each and every PT90 goes through a rigorous testing process to ensure that the centroid of the illuminated dot is within stated positional tolerances.  The retro-reflective material is 3M^® 7610 and is recessed from the surface of the target to help keep it out of harm's way.  Should damage to the reflective surface occur, the PT90 may be returned to us for application of a new target dot.  Refer to the part number configuration information below to construct just the item that fits your needs.

	Dot dia. A 0.250" .25 0.375" .375 0.500" .500 6mm 6MM 8mm 8MM 10mm 10MM 12mm 12MM You specify Note 1	Offset B 0.750" .75 1.000" 1 1.250" 1.25 25mm 25MM 30mm 30MM You Specify  Note 2	Shank dia. C 0.250" .25
	Note 1: Maximum dot diameter is 1/2" (12.7mm) Note 2: Not all dot diameters are compatible with all offset lengths, check with us if you have a question.