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![Movable arm at top end of TMT used to center light and/or mirror over survey mark geod1098.jpg Movable arm at top end of TMT used to center light and/or mirror over survey mark](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_geod1098.jpg?itok=vMCv3fOC)
Description
Movable arm at top end of TMT used to center light and/or mirror over survey mark. (Image credit: Commander George Leigh)
Photographer
Commander George Leigh
Display Date
1978
Location
Missouri, Cabool area
Collection
Geodesy
NOAA Affiliation
NOAA Corps (ret.)