The invention discloses a point-
radiation mirror-image positioning
amplifier for contour drawing. The point-
radiation mirror-image positioning
amplifier mainly comprises a tripod for supporting a
drawing board, the
drawing board, a mirror-image reflection mirror fixed to the
drawing board, a triangular
pantograph clamping the mirror-image reflection mirror and the drawing board, and an eye blocking unit. A fixing unit is arranged on the triangular
pantograph, when a contour is drawn, a painter just needs to overturn the drawing board or directly draw in front of drawing paper, measurement errors caused by overturning and moving of the triangular
pantograph are avoided, and the accuracy of drawing of the amplified contour is improved; meanwhile, drawing time is shortened. In addition, the distance between the painter and the drawing board is limited through a mark, the eye blocking unit is arranged, and especially a
radiation point is arranged, so that the point of
sight and the
sight distance of the painter are kept fixed relatively, and picture amplifying stability is ensured. The point-radiation mirror-image positioning
amplifier for contour drawing is scientific and reasonable in design, convenient and accurate to use and suitable for contour positioning and amplifying for sketching and color sketching of
urban building landscapes.