this post was submitted on 05 Aug 2024
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[–] [email protected] 4 points 1 month ago (1 children)

What does that mean? I saw it on a concrete pole and I thought it looked interesting.

[–] [email protected] 2 points 1 month ago (1 children)

Its used by a topcon or similar device. The device is used to map out 3D space using these points as Z, Y, Z distance markers from the device.

[–] [email protected] 2 points 1 month ago

I thought with the target thing it was some kind of survey mark. Thank you for the explanation!