Not only might you need a backflow preventer, the local jurisdiction could require an annual inspection by someone with the training and continuing ed...

I've even gotten the "I don't want to be in your movie" while playing with my brass transit.

This line of thinking makes me wonder why plats for new developments don't usually show the lot lines meeting each other in the middle of the street, ...

Your method of just taping out distances over one cycle is better IF your centering and taping are sufficiently accurate, which with care should be no...

I forget where I saw this picture.

For the instrument I tested this with, I did find error at d=4 cycles (only 40 meters not 100) and the largest error was at x=15, 20, 25, and 30 (alte...

>sites for EDMI calibration baselines ought to be much easier to find for a maximum interval of 800 ft. than for 1000mBut a longer distance is desi...

A tribrach could be out of adjustment that much, especially if the tripod was set up tall, but you did check its alignment before going to the range, ...

Interesting search. Wish I could have been there.But I'm confused on the numbers. Isn't 1.2 seconds of longitude in that area about 25 meters, not fe...

Initial Point Minnesota - Media coverageToday's Cedar Rapids Gazette carried essentially this story found on a related site. A reasonably accurate st...

>"I have done 200 of these in as little as 2 weeks, pocketing $4,200.) And, that was working a few hours a day."Hmmm, that's $21 each after buying ...

A 3 is NGS data sheet no0006D 3 is NGS data sheet no0033I see you reported recoveries in 1997. It might be worthwhile submitting another report givin...

For Reeeeeeaalllyyy long shots, you need this...An interestiAn interesting observation is that if you had this prism, your EDM range would not be grea...

Holy 8-ft Retro-reflecting Prism, Batman!211113 not 21113

Thanks for the help. I have gone through comparing geoid heights and come to the same conclusion. That means Lee was at (today's) astronomic latitude...