skills · Survey & capture · teach
Coordinate reference systems: WGS84, UTM, local grids, and why mixing them silently destroys accuracy.
~6 h study · original notes on this site
Coordinate reference systems: WGS84, UTM, local grids, and why mixing them silently destroys accuracy.
Name the CRS. Mixing a phone GPS with a local grid is how a wall moves two metres on paper.
Every figure cites its basis. That instrument is DemTools.
Produce an artefact before you tick: a written note, a marked drawing, a cited figure, a filed hold. Watching is learning. The tick means applied.
Study notes. Not a certificate. Not legal advice. We never design the charge, spacing, or the cut. Follow the law and the named people where you work.
Before you tick
- Source written next to every figure.
- CRS named.
- Photo not used as a length.
Every figure cites its basis. That instrument is DemTools.