• DirigibleProteinOP
      4·
      5 months ago

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

      • NerfHerder@lemm.ee
        2·
        5 months ago

        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.

        • DirigibleProteinOP
          2·
          5 months ago

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