CST Abney level SPECIFICATION : 5-1/ 4" long with radius arc graduated 0 to 90 degrees in both directions, with vernier reading to 10 minutes and percent of grade scale from 0% to 100% . Complete....
PT.GIS GLOBAL GEOSURVEYING INTRUMENTS SOLUTION LEADER FOR MAKE IT BETTER GEOSURVEYING is a which deal with GPS ( Global positioning system) providing and surveying instrument ( Survey instrument....