Replacement Glass Screen Mitutoyo PH-A14 Optical Comparator This is an aftermarket Replacement Glass Screen that is made specifically to fit a Mitutoyo PH-A14 Optical Comparator. Features include... X-Y Dashed Center Lines 30°, 45°, & 60° Dashed Lines 15.902” Glass Diameter 3/16” thick, Frosted Glass 360° Protractor Markings 4 Chart Clip Holes (Chart Clips not included) Lead time is approximately 3-weeks After Receipt of Order.