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A new type of tape measure;M-ring means that the ring can be used to measure objects. It changed the habit of measuring that formed in the past, so that the measure has become more interesting. It is usually worn on a finger as decoration, and in a time when you at random need to measure the length of the object, you can take it out. At the same time, there is no need to consider the space and the packing.This special tape measure does not need complex material to avoid waste of resources, selection of wood as a whole production, with some of the scale used by manufacturers of paper, put together an interpretation of the nature.
Ran An, Yuan Feng, Xianjing Zhang, Xiaolei Zhang