The measurement precision refers to the deviation of the measurement reading from the true absolute physical value, both, digital and analog. Therefore absolute measurement readings are examined and compared with a physically almost ideal working measuring device.
Example: two wrist watches display the time with a resolution of 1 second. If one is a radio controlled watch, it will always show the absolute correct time, as exact as it can be generated physically. The second wrist watch is a typical quartz watch and might display a deviation of 10 seconds after a month. This watch can be denoted to be imprecise.« Back