Mitutoyo 158-118 Optical Flat - 45mm Diameter 12mm Thickness 0.1μm Flatness

For the serious metrology professionals and precision engineers out there, this Mitutoyo optical flat is top-tier equipment for inspecting flatness with incredible accuracy. With a 45mm diameter and 12mm thickness, this optical flat delivers 0.1 micrometer flatness for inspecting the measuring faces of micrometers, gauge blocks, and other precision tools. It comes in a fitted wooden case that protects it from damage and contamination - crucial for maintaining its precision. Mitutoyo is the gold standard in measurement tools, so you know you're getting laboratory-grade quality that will perform consistently. This isn't your everyday workshop tool - it's for when you need absolute certainty about flatness measurements in quality control, calibration labs, or high-precision manufacturing. The optical flat method using monochromatic light and interference patterns remains one of the most accurate ways to verify surface flatness. If you're working in aerospace, automotive, or any industry where micrometer-level precision matters, this Mitutoyo optical flat is an essential piece of equipment. Just handling it requires care to avoid scratches or fingerprints that could affect measurements. For professionals who can't compromise on accuracy, this tool delivers the reliability and precision Mitutoyo is famous for.