The Mitutoyo 64PKA088A 172-868A Includes the PH-3515F Horizontal Bench-top Profile Projector with the QM Data Counter and Arm Mount. The QM Data adds new features of 2D coordinate measurement, image processing and more. The PH-3515F Profile Projector features a 14" diameter protractor screen with cross-hairs and staggered lines for easy alignment. A digital angle measurement of 1' or 0.01 degree with built in angle counter is also provided along with Halogen contour illumination and Fiber-optic illumination cables and halogen. This machine is suitable for thread pitch measurements, free from blurred or distorted images when the work-piece is angled.