Ye ol' Sonar: Late 1970's Raytheon Fathometer and manual on display as a conversation starter at my office : r/Surveying

Raytheon Survey Fathometer DE719 CM

Latitude 38 January 1985 by Latitude 38 Media, LLC - Issuu

Ye ol' Sonar: Late 1970's Raytheon Fathometer and manual on display as a conversation starter at my office : r/Surveying

Command History 1970 Volume IV, PDF, Classified Information In The United States

Command History 1970 Volume IV, PDF, Classified Information In The United States

Latitude 38 June 2004 by Latitude 38 Media, LLC - Issuu

Sonar Throwback: Reginald Fessenden and the Fathometer

YL #hamradio Ham radio, Ham radio antenna, Radio

Latitude 38 September 1994 by Latitude 38 Media, LLC - Issuu

Ye ol' Sonar: Late 1970's Raytheon Fathometer and manual on display as a conversation starter at my office : r/Surveying

Nearly 50 years later, an overdue library book makes it way home to Lake Elmo

1950's Ohmer Taxi Fare Meter - DJD Labs

Raytheon Survey Fathometer DE719 CM

Latitude 38 October 1997 by Latitude 38 Media, LLC - Issuu