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Richard Cohen recording astronomic observations with Wild T-4 Theodoli...
Ross Mackay observing astronomic latitude and longitude with Wild T-4...
John T
Rod man and level rod on overhead cable support anchor.
Starting the day's leveling operations.
Display of various signal lights and other equipment for an open house
Four-foot wooden stand with pee-wee light on top
Lois Leigh, wife of party chief Lt
Swedish Pole with 10 prisms and strobe light above
Swedish Pole extended and supported by guy wires
Swedish Pole, telescoping pole to elevate light and/or mirror 70 to 90...
TMT on left, TMOT on right
Leonard Bergman during construction of TMOT outer tower
TMOT, Leonard Bergman constructing the outer tower to support the obse...
TMOT at beginning of extension.
TMOT in vertical position prior to extension.
TMT being erected by Leonard Bergman
Control panel for TMT - trailer-mounted (light and/or mirror) tower.
Lieutenant John Oswald preparing project sketch in Triangulation Party...
Leveling and centering retro-prism for reflecting light from electroni...
Monroe Rivers after a long hard day of observing.
Monroe Rivers with Model 8 Geodimeter (electronic distance measuring i...
Ron Ramsey with Wild T-3 theodolite.
Observing with Wild T-3 theodolite
Eyepieces for Wild T-3 theodolite
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