PROFESSIONAL ACCURACY - This 12-inch engineering ruler has die-engraved graduations in 6 precise scales (10-60 parts per inch), ensuring reliable accuracy for engineering and technical drawings.COLOR-CODED DESIGN - Distinctive grooves with color coding help you instantly identify and switch between different measurement scales, reducing errors and saving valuable drafting time.PERMANENT MARKINGS - Unlike standard rulers, this engineer's scale ruler has die-engraved graduations that will not fade or rub off, ensuring long-lasting readability through years of use.DURABLE CONSTRUCTION - This engineering scale ruler is made from impact-resistant plastic, resisting wear while maintaining precise measurements for engineering and architectural work.STAEDTLER - Leading manufacturer and supplier of writing, paint, drawing and modeling products that help people around the world realize and share their ideas.
