Coordinates have been at the bottom of the list because in the past they were not easy/likely to make as accurate in an absolute sense, and relative l...

There are places where Google Earth is off more than 66 feet, so you would need to check how well it matches some points around the point of interest....

Nobody's going to bump 0.04 over with that baby.

DG2502_ROD/PIPE-DEPTH: 13.4 meters(Not my picture)

I can't see how a driven rod of any length in any soil can be depended on to be horizontally stable to better than cm level.I've seen lots of USGS and...

moved response to new thread

GTS-2BThe GTS-2B sold for $435.00 plus shipping.

What, no curling? A while back someone on one of the forums described a chain made especially for laying out a curling court.

sorry for confusionDuh. The post title did tell the story, but since both items had been discussed in the thread I disregarded the title.

I guess this makes if official HP 48GX for un-saleI'm confused. I see it HERE still available for another 22 hours unless you do something kill the...

Not quite what I'd call a clear and unambiguous spec.

One radian is the angle where the arc equals the radius, which turns out to be 57+ degrees. That fact is worth remembering in order to mentally check...