Rear rodman passing front rodman, recorder pulling.Passing the mallet so rear rodman can drive spike to steady rod.Level crew of W. H. Burger
3/18/2019 12:28:26 PM
Date: 1902
Credit: NOAA, John Hayford Album
Location: Texas, Area near Pittsburg
Subject: Geodesy
Subject: Leveling
Subject: Getting There
Subject: Velocipede