舆图分幅本无一定规则,普通习见者可约分二种:(1)按照习惯区域划分,(二)按照几何方法划分。前者如分省分县图之以省区或县治分幅,适宜於某一区域之单独应用,而不利於若干区域之相互联络;後者如百万分一万国舆图或我国参谋部陆地测量局已经印行之各省舆图,以经纬线或方格划分图幅,分之利於携带,合之可示联络。
This proposed system is based on the following considerations: ⅠSuitable projection ⅡSystematic index ⅢFacility o! combining ⅣEasy reference ⅤEconomic reproduction.