@mathteacher Okay, you got my ADHD going on this one. First, NAD83(CORS96) was used only for CORS stations. Passive marks of the time were tied...

I doubt FEMA is going to be checking on him but the lender might still require flood insurance without it. A Loma might be appropriate in this case.

I have a couple of @shelby-h-griggs-pls washers floating around the truck.

@norman-oklahoma Mark, I was thinking of you when I set, what might be my last, PK 3/4" PK nail last week. I might have finally exhausted my strat...

@pawnmaster In that case, I might have a TrimMark II floating around if you are interested. It was actually part of my 4800 system back in the late 9...

FWI, the UHF radio in a 4800 is no longer legal in the US. They were pre narrow banding.

When he's done there, he can come dig the short power feed I need for my new electrical service entrance. It's about time to replace the 8 fuse 100 a...

Years ago I did some work for an Albertan rancher in north central Oregon. He had ended up owning what had been a larger cattle feed yard outside of ...

@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.