The present invention discloses a trauma depth gauge which can be easily read by a user from various angles by a triangular scale. The present invention comprises a body, a depth measuring rod, a triangular scale and a slide knob. The body has a grip portion formed on the inner side of the first bore and capable of being hand held by a surgeon and a thin tube portion extending under the grip portion and having a second bore formed on the inner side so as to communicate with the first bore. A guide slot is formed along the longitudinal direction so as to communicate with the first bore on the outer surface of the body. The depth measuring bar is sandwiched between the first bore and the second bore so as to be able to move along the first bore and the second bore, and the tip projects outside the second bore. The triangular scale is fitted to the first bore so as to protrude and retreat, and is coupled to the depth measuring bar, and a plurality of graduations are displayed. The slide knob is mounted to move along the guide slot and is coupled to the depth measuring bar. The guide block of the depth measuring rod is equipped with an elastic mechanism which can restrain the operation of the slide knob. According to the present invention, the scales displayed by the surgeon on the triangular scale can be easily read from various angles even during the surgical operation. Further, not only the operation of the slide knob is restrained by the elastic mechanism, but also the force by which the surgeon operates the slide knob is buffered by the elastic mechanism, so that the slide knob, the depth measuring rod and the triangular scale can smoothly operate.본 발명은 삼각스케일에 의하여 사용자가 여러 각도에서 용이하게 판독할 수 있는 외상외과용 깊이 게이지를 개시한다. 본 발명은 몸체, 깊이 측정 막대, 삼각스케일과 슬라이드 노브로 구성되어 있다. 몸체는 제1 보어가 내측에 형성되어 있고 외과의사가 손으로 잡을 수 있는 그립부와, 그립부의 아래에 연장되어 있으며 제1 보어와 연통되도록 제2 보어가 내측에 형성되어 있는 가는 관부를 구비한다. 몸체의 외면에 제1 보어와 연통되도록 가이드 슬롯이 길이 방향을 따라 형성되어 있다. 깊이 측정 막대는 제1 보어와 제2 보어를 따라 이동할 수 있도록 제1 보어와 제2 보어에 끼워져 있
