Cos’è questo alla stazione SBB
https://i.redd.it/23xcavg75mif1.jpeg
di Ecstatic-Type3495
Cos’è questo alla stazione SBB
https://i.redd.it/23xcavg75mif1.jpeg
di Ecstatic-Type3495
3 commenti
Markers to do measuring.
It’s a surveyors mark that will form a record point that they can go back to or monitor for change. The centre of the marker is a known point in a 3 dimensional space.
Tiny target practice for flinging stuff at it when you bored. It spins when you hit it! /s