Nowadays, most new vineyards are planted by dedicated teams using GPS guided, laser pointing, centimeter accurate machinery.
Our vineyard was laid out using string, a long tape measure, and the Pythagorean theorem. Our son Stephen was instrumental in laying it all out and determining where the posts and vines would go.
I am rather proud of the old fashion way we did this and how precise it all turned out. Precision is important when using machinery in a densely planted vineyard and you hardly have to adjust the steering wheel when driving our rows.
By the way, Pythagoras was Greek.