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WOODEN TOWERS & SIGNAL POLES
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Coast-Geodetic-Survey
Geodesy
Triangulation
Wooden Towers & Signal Poles
Geodesy
Framing first and third leg of instrument tripod at Station Hugo.Triangulation party of William H. Burger
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Completed instrument tripod at Station Foss.Photo #1 of sequence
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First side of observer scaffolding being raised at Station Foss.Photo #2 of sequence
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Both sides of observer scaffolding in place at Station Foss.Photo #3 of sequence
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Putting ties on scaffolding at Station Foss.Photo #4 of sequence
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Completed tower with internal instrument tripod at Station Foss.This station took 1 and 1/2 days to complete.Photo #5 of sequence
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Station Pen in Washington.Triangulation party of O. B. French - occupied by J. S. Hill.Instrument was mounted on tree trunk.Instrument remained steady in azimuth but unsteady in level
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Station Gibuson - a 68 foot tree signal.Party of John F. Pratt - off of PATHFINDER
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White River West Base on the 141st Meridian Survey.International Boundary Commission surveyors
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Rock cairn signal at divide between two main forks of the Ladue River.International Boundary Commission surveyor
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Platform and stand built between two trees on Olympic Peninsula.Note man standing on platform.Triangulation party of H. A. Seran
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The crow's nest at Station Moclips - 215 feet above the ground.Note spikes driven into tree - builders would drive spikes and go hand over hand. Triangulation party of H. A. Seran.According to Seran: It took men of uncommon nerve to do this work.
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239-foot tower built on Bugsuk Island in southwest Philippines.This tower was built completely from native timber cut on location.It took 19 men off the PATHFINDER three weeks to build this signal.This was the largest wooden tower ever built by the C
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Wind tarps draping tower at Station Bippus.Wind tarps protect inner instrument tower from wind.Triangulation party of Earl O. Heaton
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Removing wind tarps at Station Umbarger.Wind tarps protect inner instrument tower from wind.Triangulation party of Earl O. Heaton
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100-foot tower at Bozeman NW Base.Note man at top.Triangulation party of William M. Scaife
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115-foot tower built around tree on Sarangani Island.
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Tower at Station Mangal.Topographic party working on the beach
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Tower with signal flag at Station Bint.At Bihintinusa Island off the south coast of Basilan.Built by crew off the MARINDUQUE
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Station Mangal from offshore.Built by crew off the MARINDUQUE
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