The invention relates to a digital display
nose measuring instrument and a measuring method, a first main scale, a display, a circular
grating sensor and a second main scale form a digital display
protractor, the
tail part of the first main scale is hinged with one end of an auxiliary scale, and the
tail part of the second main scale is hinged with one end of a
vernier scale; the other end of the auxiliary ruler and the other end of the
vernier scale are connected in an inserted mode to form a prismatic structure, or a
plug in the auxiliary ruler and a jack in the
vernier scale are connected in an inserted mode to form an X structure, and the X structure and the prismatic structure form a shared
interaction structure. The digital display measurement sliding module is clamped on the vernier scale. The digital display
nose measuring instrument has the advantages that on the basis of the digital display
protractor, the digital display
nose measuring instrument is designed into the prisms with the opposite angles equal and the opposite sides parallel to each other and the digital display nose measuring instrument with the opposite angles equal and the opposite sides equal and the prisms and the X shape evolve mutually, and the digital display nose measuring instrument achieves accurate measurement of nose and
forehead angles, nasolabial angles, nose wing angles, nose face angles, nasal columella
upper lip angles, nasal columella lobular angles and the like; and accurate measurement of the length of the nose back is also realized, so that the technical problem which is not solved in the background technology is solved.