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    Author(s): Richard E. Francis
    Date: 1970
    Source: Journal of Range Management. 23(1): 66-68.
    Publication Series: Scientific Journal (JRNL)
    Station: Rocky Mountain Research Station
    PDF: Download Publication  (609.0 KB)


    Butcher paper, surveyor stakes, lath strips, plastic letter-number codes, paper plates, and drop-panel markers were all useful for marking range ground features, providing strict flightline control, and interpreting resultant aerial photographs. All markers were both highly detectable and resolvable at the largest scale of 1:600. All markers remained visible, yet some became less resolvable, at the smaller scales of 1:2400 and 1:4600.

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    Francis, Richard E. 1970. Ground markers aid in procurement and interpretation of large-scale 70 MM aerial photography. Journal of Range Management. 23(1): 66-68.


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    ground markers, large-scale aerial photography, range management

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