FWIW,I guess you have also seen the appropriate section in the TEQC tutorial. See:br>Cheers,DMM

Hi there,You indicate that you are seeing a vertical shift of four (4) feet between points expressed in NAD83 and NAD83(2011). This brings to mind a f...

See:br>As can be seen in the article, you don't get high smoking hemp. Working in the Midwest I often came across patches of these. I believe they are...

See:And last but not least,

See also for pretty pictures and video:

Not seeing any other replies, I will say that in one if my former jobs we used the Z-12 with the ASH701008.01B antenna.Obviously there are other compa...

Resources for information on surveying instrumentsGiven the frequent questions posted about historic surveying equipment, I post below three of my fav...

br>This is the unit I used in 1973. It was not mounted on the theodolite.Company information atbr>HTH,DMM

While the problems of multipath and obstructions to the signal seem the likely cause, I suggest submitting your data to one of the many free on-line G...

For local knowledge I suggest contacting the NGS State Advisor, Dan Martin. On the issue of frost heave on monuments in extreme environments, see:br>B...

For a picture see page 30 of the following PDFbr>Don't forget the marine cell batteries...

Wild T3 manual PDFUnfortunately, this manualdoes not include the part you show. Hopefully it will be of use. Always wanted a T3 of my own. At one time...

Still think they are the most likely source. Mr Middleton, senior NGS advisor to Texas, might have them or know where to obtain copies. For contact in...

As can be seen from the photo, sometimes it was necessary for NGS to build things themselves.BTW, I still think it is incorrect to use a digital level...

FWIW,It is my understanding that the crosshairs in modern digital levels do not provide an accurate rod intercept reading as they are intended to assi...

The NGS Instrumentation and Methodologies Branch in Corbin, Va has designed a device for this purpose. I searched my computers for photos or plans but...

Howdy,I assume you are asking because you were unable to get them from NGS via either the Information Center or the Texas State Advisor?Cheers,DMM

Nice article with links here:

Continuing Education Was Created To Educate The UneducatedA degree is not the end of education. As an old colleague once said, "Educators should facil...

What is the site's PID?