What ruler is more precise?

The precision of a ruler depends on its measurement scale. Typically, a ruler with smaller increments, such as a digital caliper or a ruler marked in millimeters, offers greater precision compared to a standard inch ruler. For example, a metric ruler with millimeter markings can measure to the nearest millimeter, while a standard inch ruler usually measures to the nearest eighth of an inch. Therefore, in general terms, a metric ruler is often considered more precise.