PEC manufactures the rules with high-contrast graduation markings that are easy to read. The graduations are deeply engraved and blackened with ink, meaning they won't rub off like printed graduations can. PEC Rulers can keep their shape even after multiple hard hits and drops. The hardened steel body makes the rules stronger and perfect for rough use. All PEC Rulers are precision made and etched in the USA. PEC metal rules are the most beneficial measuring and inspecting tools you can use in any workplace. The PEC D/M (Decimal Inch/Metric) ruler is primarily targeted at professionals who need to work seamlessly with both decimal inches (common in US manufacturing) and metric units (millimeters, common globally) on a single tool. Best for: CNC operators and engineers who need to toggle between digital readout systems (CAD) and physical measurements. The core benefit for the user is the ability to handle the various scales without constantly switching between different rulers, which optimizes workflow and reduces conversion errors. Excellent, well-made, well-engineered with inches on one side and millimeters on the other. The hardened steel body makes the rules stronger and perfect for rough use. Both English and Metric graduations for better performance and user convenience, as both systems are provided on a single rule. The graduations are deeply engraved and blackened with ink, meaning they won't rub off like printed graduations can. Machinist-level precision and 4 measurement scales on the rule. Metric/Imperial dual-scale rulers for manufacturing professionals, engineers, and technicians Length: 6"/150mm | Graduations: Decimal/Metric; 10ths, 50ths,1.0mm, 0.5mm | Thickness: 0.040" | Width: 3/4" | Rigid Carbon Steel Construction | Satin Chrome Finish | Fully Hardened and Tempered Dual Units: Incorporates both English and metric measurement scales, allowing to switch seamlessly between inch and millimeter readings for wide application Reliable Build: Made from fine quality carbon steel, fully hardened and tempered to ensure durability in workshop environments. Corrosion-resistant and built to last a lifetime in harsh environments. Durable & Versatile: Precisely etched graduations are filled with black paint to provide clear readability. Satin chrome finish reduces glare and protects rule from wear and scraches. PEC Rulers can keep their shape even after multiple hard hits and drops. Made In USA: Since 1960, Products Engineering Corporation () has been providing excellent fine precision tools for woodworking,industrial,professional and consumer markets worldwide.