The Acoustic Sensor of the Dorsey Fathometer (model 808) mounted on one
By A Mystery Man Writer
Description
NOAA Photo Library > Collections > Coast & Geodetic Survey > Nautical Charting > Soundings > Acoustic Sound Systems
Sensors, Free Full-Text
The Acoustic Sensor of the Dorsey Fathometer (model 808) mounted on one
Sensors, Free Full-Text
New fathometer used at full speed. Washington, D.C., May 7. Dr. Herbert Grove Dorsey of the U.S. Coast and Geodetic Survey has invented an instrument to secure the precise measurement. The machine sends a sound, pitched so high that it is above
History: Historical Documents: Radio Talk on Echo Sounding: NOAA Office of Ocean Exploration and Research
History: Historical Documents: Radio Talk on Echo Sounding: NOAA Office of Ocean Exploration and Research
NOAA Photo Library > Collections > Coast & Geodetic Survey > Nautical Charting > Soundings > Acoustic Sound Systems
The Acoustic Sensor of the Dorsey Fathometer (model 808) mounted on one
The Acoustic Sensor of the Dorsey Fathometer (model 808) mounted on one
John CLOUD, Historian, PhD in Geography, University of California at Santa Barbara, 2000, National Oceanic and Atmospheric Administration, HI, NOAA, NOAA Central Library
This pendant speaker drops down from a reinforced cable suspension system for a unique yet functional style. Being high vaulted in an indoor space provides powerful sound to the surrounding area. p strong OSD’s Nero Arc SUB 8 Pendant Speaker /strong is Designed for Commercial and Demanding Applications. Ideal for Installation Where Conventional Ceiling or In-Wall Speakers are Limited by Unique or Challenging Architectural Constraints.
OSD Nero Arc 8 2 Way Coaxial Pendant Style Speaker 8Ohm/70V Black
Lifetime Appliance Parts - 52W2901, 52W29 Flame Sensor for Lennox, Armstrong, Ducane Furnaces
NOAA Photo Library > Collections > Coast & Geodetic Survey > Nautical Charting > Soundings > Acoustic Sound Systems
Sensors, Free Full-Text
from
per adult (price varies by group size)