رقم الجزء 6703050

معلومات الجزء
1 to 20000 yd scale ratio; time difference scale 5 to 1 graduation in degrees for irregular base plotting 1 ea 4, 4.5, and 5.5 sound-second sub-base lg grad; for specific use ord u/w sound ranging wind corrector model m1; all components and/or accessories listed in ord 7 snl-154; used to determine location of enemy guns by plotting difference in tine at which the sound of the gun reaches ea of several microphone stations