a. Maps fall into the following general scale categories:
Small scale . . . . . . . 1:600,000 and smaller.
Medium scale . . . . . Larger than 1:600,000 but smaller than 1:75,000.
Large scale . . . . . . . 1:75,000 and larger.
b. Standard scales for Department of the Army topographic maps are 1:1,000,000, 1:250, 000, 1:100,000, 1:50,000, and 1:25,000. Military city maps normally are published at the scale of 1:12,500. Photomaps normally are published at 1:25,000. General maps at scales smaller than 1:1,000,000 are issued for special purposes.
c. Depending upon the availability of mapping information and the importance of the area, the scale of 1:500,000 is sometimes substituted for 1:250,000.
d. All of the above types and scales of maps will not necessarily be available for a particular area. Their issue will be governed by military and logistic considerations.
e. Maps with scales different from those given above occasionally will be encountered. Usually, they are foreign military maps. The most common examples are 1:62,500 or 1:63, 360 in place of 1:50,000; 1:125,000 in place of 1:100,000; and 1:253,440 in place of 1:250,000, In the United States, nonmilitary governmental mapping agencies may use other scales such as 1:24,000 or 1:31,680 in place of 1:25,000; and 1:48,000 or 1:62,500 in place of 1:50,000.
|
