The phrase refers to a measuring tool designed for linear measurement, specifically calibrated in millimeters (mm), that can be produced using printing technology. An example would be a document, often a PDF, containing markings representing millimeter increments, intended to be printed and used as a physical measuring aid.
The utility of such a tool lies in its accessibility and convenience. It provides a readily available solution for situations where a physical ruler is unavailable or when precise, small-scale measurements are required. Historically, standardized measurement tools were crucial for trade and construction, and the ability to generate these tools on demand represents a modern adaptation of this necessity.
The subsequent sections will delve into the applications of such measuring devices, considerations for ensuring accuracy when printing, and alternative methods for achieving precise measurements.
