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WYE
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USGS Topographers
USGS topographic field party, circa 1925, with a Wye level on a tripod and two stadia rods....
USGS Topographers at Work
A level crew running a line from Mojave, California to Keeler, California via the state road, preparing the way for topographers to follow. R.A. Farmer, just to the left of the long-barreled Engineers WYE level instrument, was the levelman and Chief of Party. Holding the umbrella (used to shield the...
Engineer's or Wye Level with Case
Manufactured by W. & L.E. Gurley, Troy, New York, before 1950. The case is original, marked "HYDROGRAPHY / U.S.G.S." and "1939". The case includes an adaptive re-use of a belt as the carrying strap. The instrument has serial #1749 and was used in the U.S. Geological Survey Water Resource Discipline'...
Engineer's or Wye Level with Case
Manufactured by W. & L.E. Gurley, Troy, New York, before 1950. The case is original, marked ""HYDROGRAPHY / U.S.G.S." and "1939". The case includes an adaptive re-use of a belt as the carrying strap. The instrument has serial #1749 and was used in the U.S. Geological Survey Water Resource Discipline...
Engineer's or Wye Level with Case
Manufactured by W. & L.E. Gurley, Troy, New York, before 1950. The case is original, marked ""HYDROGRAPHY / U.S.G.S." and "1939". The case includes an adaptive re-use of a belt as the carrying strap. The instrument has serial #1749 and was used in the U.S. Geological Survey Water Resource Discipline... |