@murphy It is way easier to visualize this in azimuths. The formula for magnetic to grid north is azimuth + declination + LaPlace + convergence ang...

@murphy I don't think it is your file, I think something is up with the site.

Back to the OP. First, you need to determine the magnetic declination for you project area in 1947, the NGS web tools are you friend there. Next, ap...

@gary_g I have not been able to download any PDF's from the site since yesterday.

When I started out in the late 80', my first chief would have us chain anything critical within 25 to 50 feet of the instrument. I'm not sure I could...

I don't think Shelby is questioning the underlying coordinates for CRTN since they are all on the current California Spatial Reference System (CSRS). ...

Can the TDL 450H be used as a repeater? If so, instead of connecting it directly to the receiver, use it as a repeater. In addition to resolving you...

@wa-id-surveyor I can give you three recent examples in Washington where it caused a problem. One of them required a fair amount of engineering rewor...

They lost that connection as soon as you scaled them.

@bill93 I can testify that even if, and that is a big if, metadata was originally provided, chances are it will not be present on a set of engineering...

@lurker Truth. Friends don't let friends scale grid coordinates without truncating. The lack of meta data in these examples shows exactly why.

I have a copy a page from the Oregon Department of Transportation Route Surveying Manual from 1998 (page 21). It shows the township grid, the townshi...

@mightymoe Yeah, I figured it would be an uphill battle getting the Title company to pay up. That is the main reason I just let it go.

@mightymoe That works great for an easement benefiting the new tract across the parent. From personal experience, this does not work in the opposite ...

Because UV radiation can destroy unprotected materials just like chemicals? Unfortunately for the wordl, it just breaks it down into smaller micro pl...

Maybe I misunderstood you. Can you get a fix with the suspect CORS as your distance from that particular CORS increases or is the failure to initiali...

@bstrand Not that simple along the west coast. There are all sorts of statutory and jurisdictional hoops you need to jump through to file. Your usua...

Most networks recently switched over to MY3. Have you confirmed that the broadcast coordinates are the same as the published. That being said, I'm n...

@burkc If the conditions meet the triggering the recording requirements and the surveyor does not prepare the survey, then that is a board issue.

@burkc I don't think it is necessarily against the intent of the CA recording act not to set missing monuments. If the conditions that trigger the ...