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Subject matches "PGR - Precision Graphic Recorder" or its children
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PGR motor drive gear box. Used on Alden recorder
PGR-Precision graphic recorder. 3rd generation.
PGR-Precision graphic recorder. 3rd generation.
Sydney Knott, PGR work aboard ship.
View inside the lab of the Atlantis II
Hydro lab aboard the Atlantis II
Richard Pratt operating a P.G.R. aboard the Atlantis II
Sydney Knott working with PGR during Thresher search.
Willard Dow, Frank Andrews, Stephen Stillman with PGR during Thresher search.
Lincoln Baxter working with PGR during Thresher search.
Underwater PGR recording taken during Thresher search.
Ross R. Grunwald
Hartley Hoskins and Precision Graphic Recorder [PGR]
Richard Backus, Biology, looking at PGR recordings.
Precision graphic recorder in lab on Atlantis II
PGR echo sounder
Equipment onboard the Chain
PGR depth recording
Charlie Innis with PGR in Chain main lab.
Unidentified person with PGR.
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![Hartley Hoskins and Precision Graphic Recorder [PGR]](media.php?i=101299&t=0&p=-1&dg=a95d45e7015f8a80a82e98bc44a248e7e6d31402 "Hartley Hoskins and Precision Graphic Recorder [PGR]")
