In western states there will be combined and grid scale factors of 1. The grid scale factors of 1 will be pushed east or west of the Central Meridian ...

Mathteacher, you'll need to find that section of land where 1.00000000 is the State Plane combined scale factor across the entire section such as Land...

Some programs have a subroutine that use a scale factor to adjust the coordinates. If you're in a state coordinate system and apply the scale factor i...

My spidey sense says tread carefully. Probably it's simply a request cause someone is conditioned to request an ALTA survey for all their work. But as...

We already know that the old hand drawn maps the city/county created will underlay better in Cad when scanned and aligned than the GIS lines. It's qui...

I do believe you're correct, basically an LDP with the Central Meridian passing through the set-up point. I prefer to set-up my own if that's what the...

I'm not the guy for this one, but there are some DC programs that will "set" your survey to "ground" using GPS equipment with no reference to a projec...

I checked recently and the new given Scale Grid Factor for the Central Meridian of a local 2022 zone will be 1.00025 (5 places). The designers have fi...

That's what we do for DOT, if our DAF is 1.000235, we show it as 1.000235000. That makes them happy. That relates to 235PPM or 2.35' in 10,000'. For u...

To meet those standards be sure your GPS data is tight, you don't need 10 hours per point on different days. You can occupy pt#1, collect data for sta...

The combined scale factors are derived from the elevation (ellipsoid height) and the grid scale factor. Multiply them together and you arrive at a c...

When I started I often used Resection, almost every small job. Setting up a point that would observe most of the site was more important than traver...

The CM of your zone is W81d, your project is near W81d12' and your convergence angle is 0D06' which means close to 1/2 of the longitude angle between...

I'll have to say yes and no, the photos have become much better, the parcel lines have become worse. The 1980's parcel lines were positionally bette...

A metes legal description is OK? Almost no bounds calls? Chefs kiss is SF to 1/100trillion

I don't have the words for that thing, excessive is a start.

SF at your location is about 50ppm, you will need to shoot a distance of 1000' to see a difference of .05'. That's at 100' elevation.

If it's a simple grid-ground issue, the entire process is glitched. You have bigger issues than false points.

That control cert is wild. The state board concocted that thing up?