Trig Spiders from Mars (opens in new tab)

(alasdairrae.github.io)

2 pointsdrsim7mo ago2 comments

2 comments

What are the dots?

drsimOP7mo ago

Physical triangulation stations (trig points) for surveying and mapping.

j / k navigate · click thread line to collapse

(alasdairrae.github.io)

2 pointsdrsim7mo ago2 comments

What are the dots?

drsimOP7mo ago

Physical triangulation stations (trig points) for surveying and mapping.

j / k navigate · click thread line to collapse