Abney level 5 1/ 4" 133 mm long with radius arc graduated 0 to 90 degree in both directions, with vernier reading to 10 minutes and a percent of grade scale from 0% to 100% . Complete with....
Thales GPS ProMark3 continues the Thales GPS tradition as the next generation of easy-to-use, turnkey survey systems. All the required hardware and software needed to perform fast centimeter accurate....