@jim-frame Good morning Jim. We use static for our GNSS network observations and repeat observations. The vectors exported from Topcon software consis...

@john-hamilton 100% duplicate, down to the nth degree of a millimeter. just my thought, no bueno for mis-weighting the model

if the wind picks up, use a wind box on the windward side of the plumb bob

Slitting mill and rolling mill.

it's like that today, yes

@learner grips only have 0 (off) or 1 (on), regrettably, i have tried them and still no change

i doubt it is refraction; that's a very small effect especially at 100 meters. id have to check the equation, though.

Professional Publications, Inc. would be a good place to start

@rover83 thank you. I noticed that your last name is Glaves; mine is Glawe. Most of my Glawe family is from Green Bay, where is yours from? And my bro...

Ellis Veatch, another long lost soul. RIP

@jon-payne agreed, i have no sympathy for his actions. his sample drawings have dimensions to the hundredth of a foot and lines clearly labeled 'prope...

only for the first four lots. After that, he used the older instrument.