Mitutoyo PH-3515F Profile Projector with Series 172 Accessories. The PH-3515 Profile Projector with M2 2D Processor is a horizontal projector equipped with accurate linear glass scales and touch screen M2 geometric measurement display. Features include: touch screen tablet and easy 2D processing for measuring dimensions, along with a choice of standard, edge detection or all-in-one packages. Retrofit packages are also available. These packages include installation and an A2LA accredited calibration.