1 results about "Sliding scale" patented technology

This utility model relates to the field of diameter measurement technology and proposes a digital display diameter ruler, including a first main scale and a slide ruler slidably disposed on the first main scale. The first main scale has a first measuring scale, and the slide ruler has a second measuring scale. After the slide ruler slides on the first main scale, it is used to measure the distance between the first and second measuring scales. A display component is provided on the slide ruler to display the distance between the first and second measuring scales. The first main scale has a groove in which the second main scale is slidably disposed. After the second main scale slides within the groove, it increases the measuring length of the first and second measuring scales. This invention solves the problem that existing equipment in the prior art cannot meet the requirements for these high-precision, large-range measurements.