Aerial View Maps

Scale bar of an aerial photogtraph?

Hi all, I have an aerial photo which needs interpretation and a proper scale. I have done the inteepretation and done the scale, as they were required. One thing that I could not get my head around is assigning the scale bar. The scale of the aerial map is 1:80,000. How do I derive a proper sclae bar for this map? Please help, as this will save me.

Public Comments

1. 1 mille = 5280 feet 1 foot = 12 inches 5280 ft / mile x 12 in / foot = 63,360 inches per mile 63,360 / 80,000 = 0.792 map inches should be 1 mile Addendum: It is always wise to use the common unit convention for the area in which you work. georock's statement as to use of a metric standard applies to a large portion of the world. However, the vast majority of geologists are employed by petroleum companies and most of those companies are incorporated in the United States. The overwhelming preponderance of US geoscientists working within the US currently use modified English units not metric on their geological maps because of lease and surveying efficiencies. This fact precludes the "exclusive" geologist usage suggestion. Again, use the units expected by the majority of the users of your map product, particularly the person evaluating your work.
2. The metric system is used almost exclusively by geologists, so 1 cm on the scale bar would represent 800 meters, or 1.25 cm = 1 km. Keep in mind that the scale on non-rectified photos will vary, and that is why you won't see scale bars on air photos.