High Power 10X Pocket Comparator 1-3/8" Diameter An optimum quality triple element Keller/Achromatic Lens of 10X magnification in a focusing mount gives sharp undistorted images free of aberrations. The scales are photo etched into a glass reticle which is placed in actual contact with the measured object, thus obtaining simultaneous enlarged images of the scale and measured object. Highly accurate measurements are thus obtained. Can be used as a high grade magnifier. Extra glass reticles are available. These are interchangeable and screw directly to the bottom of the unit. Features include: 10X Magnification # 5 Reticle included