Johan_Ha:
you need a theodolite.
Nothing's new though: the Tellurometer is 60years old, branded commercially by Plessey. That was the first non-optical survey instrument I ever used, c1975.
Johan_Ha:
you need a theodolite.
Nothing's new though: the Tellurometer is 60years old, branded commercially by Plessey. That was the first non-optical survey instrument I ever used, c1975.