Meter pen / Measuring tool

Normally, we can only measure the length of the objects which have a flat shape. We’ll always feel troubled if we want to measure the curves and uneven objects, for instance a curve vase. Almost all kinds of traditional rulers cannot meet such need. Now, meter pen is designed to solve this problem by a revolutionary use-pattern. We just need to hold the pen and slide along the track which we want to measure, the length data will appear in the end of the pen synchronously by the form of electronic luminous figures. Thus, we will be able to measure a variety of rugged and tortuous shape without the limitations of the physical length of tools.