Dimensional measurement instruments include devices for precisely measuring the height, width, and movement of objects. They are mainly used to construct linear gauges such as linear gauge sensors and gauge counters. Depending on the model, linear gauge sensors are divided into those with measuring range from 10 mm to 30 mm, and those with resolutions of 10 μm and 1 μm respectively. The linear gauge method enables high accuracy measurements over a long period of time. In addition, it has excellent durability. A gauge counter has various calculation functions and numerically displays the measurement results of a linear gauge sensor. There are also dedicated printers for keeping records.