A short cut for scaling aerial photos

Earl J. Rogers

Treesearch

A short cut for scaling aerial photos

Informally Refereed

Authors:

Earl J. Rogers

Year:

1948

Type:

Science Perspectives

Station:

Northern Research Station

Source:

Station Paper NE-20. Philadelphia, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 10 p.

Download (PDF 1.59 MB)

Download (PDF 1.59 MB): https://research.fs.usda.gov/download/treesearch/13149.pdf

Abstract

Aerial photos are a handy tool for the forester. They furnish forest data quickly. But when the photo is used as a map, care is necessary - especially in rough country. In flat country photo scales are quite uniform and distances can be measured accurately. But in rough country photo scale varies with changes in elevation, and it is more difficult to measure distances accurately. There are other factors that affect photo scale, but land elevation is the most important to foresters.

Citation

Rogers, Earl J. 1948. A short cut for scaling aerial photos. Station Paper NE-20. Philadelphia, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 10 p.