随着煤炭事业的飞速发展和生产管理的不断加强,对工程图纸的需求,不仅数量越来越多、精度越来越高,而且图纸的比例与非比例变换量也在不断增加。虽然现代化的电子绘图仪、光学复照仪和静电复印机等仪器能够满足大型矿山生产用图的需要,但是绝大多数中、小型矿井的工程图纸缩放工作,还是靠缩放仪、比例尺、比例规等仪器来完成。因此,中小矿井,甚至一些技术条件不十分雄厚的大型矿井,生产用图纸的缩放很有改进的必要。煤矿工程图的角形缩放法,就是在解决矿山工程图实际需要与缩放简便实用前 With the rapid development of coal industry and the continuous strengthening of production management, the demand for engineering drawings is not only increasing in number but also increasing in accuracy, and the proportion of drawings and non-proportional transformations are also on the rise. Although modern electronic plotters, optical complex cameras and electrostatic copiers and other equipment to meet the needs of large-scale mine production plans, but the vast majority of small and medium mines in the work of scaling drawings, or by scale, scale, scale, etc. Instrument to complete. Therefore, medium and small mines, and even some not very strong technical conditions of large mines, production drawings scaling very much needed. Mine engineering drawings angular scaling method, that is, to solve the actual needs of the mine drawings and scaling is simple and practical