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![Ensign Tim Steele using Pico Rock Drill to set a horizontal control mark geod1001.jpg Ensign Tim Steele using Pico Rock Drill to set a horizontal control mark](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_geod1001.jpg?itok=6WWY0DDq)
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https://www.noaa.gov/media/digital-library-photo/pl23geod1001jpgDescription
Ensign Tim Steele using Pico Rock Drill to set a horizontal control mark.View looking northeast over Chimney Rock from Midway Rocks in Port Frederick. (Image credit: Commander Grady Tuell)
Photographer
Commander Grady Tuell
Display Date
1982 May
Collection
Geodesy
NOAA Affiliation
NOAA Corps
Keywords
Geodesy