STV develops a large inspection area system for metal sheets. The active area for inspection is 540×540 mm. The sheet is placed on a glass table, and inspection is executed for contour geometry measurement in backlight, as well as surface inspection with different top illumination options. The system first application is for nickel sheets of size 300×300 mm, which contain inkjet nozzle plate units. The system is equipped with a motor zoom, dual cameras, and measures holes in metal sheets of typically 15-30 micron diameter, with accuracy of better than 1 micron, and repeatability 0.05 micron. Nozzles of size down to 4 micron have successfully been measured.