GR-8

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  • sound ranging

GR-8 Sound Ranging Set.jpg

References

  • TM 11-2568 Sound Ranging Set GR-8, september 1945
  • TM 11-2568, Sound Ranging Set GR-8, 241 pages. PB 39545 - BSIR 3(10):726; 12/06/46
  • File:SIG 7 8 GR-8.pdf