. Basic methods for the calibration of sonar equipment. ^^R o<= -t<7o t^/£iA/ OF 7='f{oTC^Cti. QCU -S'S'o Oyn CoJ?le f^orvrr TTTfl/vs. a ltS:i3S â *" To PifoJ^ out i^ jzr (Qc 14. su , II 1/ â - ^ ' K'tr FicuRK 31. .Sample ciiciiil sheet No. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Office of Scientific Research and Development. National Defense Research Committee. Washingt


. Basic methods for the calibration of sonar equipment. ^^R o<= -t<7o t^/£iA/ OF 7='f{oTC^Cti. QCU -S'S'o Oyn CoJ?le f^orvrr TTTfl/vs. a ltS:i3S â *" To PifoJ^ out i^ jzr (Qc 14. su , II 1/ â - ^ ' K'tr FicuRK 31. .Sample ciiciiil sheet No. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Office of Scientific Research and Development. National Defense Research Committee. Washington, D. C.


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