I've never handled a Curta, but I remember the ads in Scientific American back in the '60's. I think I'm a year and a half older than Paden. Another ...

In thinking it over, I realize that GEOCON couldn't have done anything about that 1 foot. What was needed was a closer point with both triangulation ...

I start with the published NAD83(1996) latest coordinates from the data sheets for those points (or the RM3 position computed from them). I run GEOCO...

A few years ago I picked up White's book from our public library discard shelf for $1. Must not have been checked out enough times.

chris mills, post: 370679, member: 6244 wrote: Exactly right. Always keep paper and film documents in the coolest place you have - it slows down any c...

GeeOddMike, post: 370695, member: 677 wrote: Looking at the control in your area I am surprised the agreement was as good. I probably wasn't clear i...

GeeOddMike, post: 370206, member: 677 wrote: Were you using NADCON or GEOCON? For this position, GEOCON2.0 using FBN (=1996) to 2011 gives coordinate...

I had a g-g-great uncle who was county surveyor for some decades in the years after the civil war, 20+ years after the original GLO surveys. Someday ...

If there is any chance the radio will try to transmit, it is best to leave the antenna on. Otherwise, it would be trying to push XX watts into an ope...

Some of those places are all about rules. I once was escorted to a meeting in the inner compound of a base. As we were leaving, the guard at the inn...

linebender, post: 370222, member: 449 wrote: the foot difference you are seeing is typical for your area on the classic monuments. Thanks for the con...

Yes, that's about the shift I calculated from your coordinates. The significance or insignificance of that difference is the subject of another threa...

Thanks, Kent. That result, and especially the uncertainty, are amazing! Yes, I knew I was pushing it and expected a larger uncertainty than that. B...

summerprophet:I ran the L1/L2 file soon enough that it used ultra-rapid data, then again when it had rapid data. People usually report, and it fits m...

Probably about 6 km to IAMN and 25 km to NLIB. The others OPUS uses for sessions in this area are IAWN, IATA, and IAMQ all further. OPUS sometimes do...

Make sure your level vial is calibrated before doing any other adjustments. You probably know the routine, but just in case ... Level the instrument ...