4 ms·
You still have to send people out into the field. And you had to know what you waned to survey ahead of time. During the war that sometimes meant sending surve
by 7952 1y ago
You still have to send people out into the field. And you had to know what you waned to survey ahead of time. During the war that sometimes meant sending survey teams behind enemy lines. Satellite remote sensing changed all of that.
- timewizard 1y agoYou also want to set a marker so that when you come back later you can set your theodolite up in the exact same position as you did 20 years ago. There's a lot of surveyors marks hammered into things out in the world.