If you have astigmatism you should leave your glasses on. Lenses that correct near or farsightedness can distort vision through low end optics.

I suggest starting by studying the Oregon DOT LDP documents. There is a lot in there that will help you along. As for setting up in Autocad experime...

I looked through a few more books and see a clear language change in the 1930 manual. They describe the triplicate process as one original and two pho...

I find little direct reference to copy methods, but there are some good clues. The 1902 Manuak clearly describes the early triplicate plats as being h...

I suppose I could have answered the question... The various GLO plats I deal with appear to be hand copied, possibly traced. There are variations in...

There is a table on the plat listing the surveys on which it is based. I often find explanatory notes as well. We have many townships in the PNW tha...

Many of the functions of NGS support both defense and commerce. Very little happens that doesn't depend on a robust spatial data sector. I hope the ag...

@meh I have yet to see a usable network solution in Idaho. We routinely see 0.3' of difference between network rtk and validated static positions. Whe...

We run the ABC test on the high quality prisms and usually bill it to the job we are preparing for. We also charge rates that cover any downtime.

For topo I'll run Chinese baseballs all day long. For precise control and monitoring it's nodal traverse sets. We run an a b c test and reject any tar...

If I were spending three minutes at the point I'd likely extend it and do a static network. If RTK was my only tool I'd split the occupation and spin ...

@mathteacher For positions, Idaho requires an explicit statement. You have to remember our maps are prepared and used by a diverse crowd. Some in that...

You've gotten good ideas on depth and such. Two suggestions. First, use an auger and widen the hole at the base. Don't overdig and fill as recompacted...

High explosive, quick fuse setting..

@cv In the mortar section we round both ways and send an HEQ to each..lol

If I cannot make the original monument accessible I do not set a mag or pk at the surface. Two years ago I spent a week digging up monuments where t...

Our office does work in about a dozen States. I am licensed in five and work hard to stay current where I'm active. This has to factor into your decis...

@minbarwinkle Many of our roads follow lines of our public lands survey system or subdivision lines. There are countless controlling monuments buried ...

About four years ago I found a 4 pound hammer with a wedge axe bit on one side. I could chew through eight inches of asphalt in under a minute. Best t...