Machine design is with combination chi

The utility model discloses a machine design is with combination chi, including the main scale body, one side fixed mounting of the main scale body has first loose axle, and swing joint has first chiboard on the first loose axle, has offered hollow groove on the first chi board, and sliding connection has first painting brush on the hollow groove, and the thick scale mark of one side fixedly connected with of first chi board is personally experienced sth. Part of the body, and the right side fixed mounting of the main scale body has the second loose axle. The utility model discloses a set upfirst loose axle, spring and chucking are tied, the main scale board can be used for drawing the straight line, first chi board and second chi board rotate simultaneously, it forms triangle -shaped tomake between its and the main scale board, can draw out the triangle -shaped figure, through the angulation ware, can draw out the circular arc line, when not using the angulation ware, it makes thefixture block card advance i