Ben Oostdam's
Autobiography:

1960-1963


page 36
OAHU 2
March-April, 1962

After discovering Hawaii's WWII Surplus, where we loaded our jeep with levels, transits, tripods, rods, range poles, sextants and more, we were ready to start surveying the beaches from land.
We used the horizon leveling method (left) as our beach profiling method.
For positions, we employed Benchmarks, Range- and Base-lines and horizontal sextant angles (right).


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