About This Product
Ideal target for diameter checking.  Use with image processing software for calibration and setups.  Easy legend included for quick identification.  Target is on a stable glass substrate etched in Low Reflection Chrome.  Pattern is on the contact surface (right-reading looking through).  Overall Dimensions: 3.500”x1.25”x Nom. 0.060”.
Pattern:  Eleven (11) dots.  Dot Diameters:  
1.00” (25.4mm), 0.75” (19.05mm), 0.50” (12.70mm), 0.375” (9.53mm), 0.25” (6.35mm), 0.125” (3.18mm), 0.050” (1.27mm), 0.035” (0.89mm), 0.020” (0.51mm), 0.010” (0.25mm), 0.005” (0.13mm)