Talk:2920: Survey Marker

"datums." JohnHawkinson (talk) 14:38, 16 April 2024 (UTC)

FWIW, there is a marker at the end of my street, and I have seen others. I know "in the ground" is a figure of speech; all I have seen were set in rock (often with molten Lead/Zinc) so they didn't travel. My road we have boulders nobody is likely to move. Other places like Appalachian Trail, set in the mountain stone. In sandy South Jersey they set a couple tons of concrete and set the marker in that. --PRR (talk) 23:41, 16 April 2024 (UTC)

I like to think our myriad calendars & leap days & time zones & daylight savings time & mapping coordinate offsets, are all orchestrated specifically to complicate time travel. Have fun materializing halfway into the ground, or entirely out of the ecliptic, time travel wankers. ProphetZarquon (talk) 06:30, 17 April 2024 (UTC)

This reminds me of the prime meridian that's laid out on the ground at the Greenwich Royal Observatory for tourists to stand on. Unfortunately, it uses an old datum and the actual prime meridian under WGS84 is about 100 metres to the East. Fortunately, the British Isles are moving slowly North East so the two meridians will coincide at some point. Jeremyp (talk) 09:09, 17 April 2024 (UTC)