Mitutoyo Optical Comparator Replacement Chart Clip The Mitutoyo Optical Comparator models PH-A14 & PH-3515 both have glass screens that have 4 Chart Clips incorporated into the glass screen. The Chart Clips are used to hold Mylar Overlays flat and stationary on the glass when inspecting your parts with the Optical Comparator. This is a single Replacement Chart Clip. Mitutoyo Replacement Glass Screen for the PH-3515 is part # 12BAE262. Mitutoyo Replacement Glass Screen for the PH-A14 is part # 12AAK756.
