Degree of interior angle degree of amount board

摘要

Topic It makes the angle index measurement at the time of interior angle measurement SI easy when expanding the left and right both measurement bar, to compact converts after the bevel angle measurement job and it offers the degree of interior angle degree of amount board which is enclosed.SolutionsMeasurement bar the Tip of 1 on left and right of the same length and 2 with concatenated pin 10 by the other end of the axial stopping and the left measurement bar 1 the other end of the axial stopping and dextral measurement bar 2 and the angle index 7 which is provided in surface 5of a goniometry board 5 of 90 degree type left and right measurement bar following one destal of index part 4 being attached joint bar 3 to the bevel angle of 1 and 2 with concatenated pin, 10 left and right measurement bar at the goniometry board 51 destal and concatenated pin 10 between 1 and 2 to joint, lower edge part 11 of goniometry board 5 and vertical arm 12Intersection section at concatenated pin 10 you joint with the other end of 13 and index part 4 attachment joint bar, 3 inside goniometry board 5 from the guide hole 6 of formation penetrate completely the knob section 9 attachment screw axis to index part 4 being attached joint bar and 3 goniometry board joint with 5 and joint bar 3. Goniometry board 5 aforementioned left measurement board 1 and dextral measurement board being position possible between 2 and aforementioned joint bar, 3 in order for the whole to become quadrilateral condition, it is assembled. Choice figure Drawing 1