Key to solving this is that 80 - 20 = 60. BTW, 30 degrees is correct, by elementary geometry. GB

@kevin-hines If you are still in for $80, I have available the second edition (copyright 1995) of the same book, hardbound, still in dust cover, perf...

@jimcox I thought I had a COMPLETE set of Trimmap modules when I sent everything I had Trimmap-related to someone in Romania a bit over nine years ag...

@jim-frame Thanks, that works well. Earlier I tried changing the Max. Zoom Level to something around 60, which didn't work, no imagery appeared on ...

@jim-frame I found your thread on StackExchange and followed the instructions presented there (QGIS 3.30 - fresh download and install today) but my ...

It is sort of a shame that the scales on the standard six-sided engineer's scale were not chosen to be closer to a geometric progression to more evenl...

@mightymoe CMM = Cadastral Measurement Management. Kurt Wurm of New Mexico State University has provided Cadastral Measurement Management for Windo...

Perhaps the surveyor whose work the OP was following was using an instrument like the Wild T16, which reads to minutes and then you interpolate to get...

I have a Taylor barometer that probably has not been out of its case for 30 years, also marked SMT-5-51, but apparently mine is for higher elevations....

@jimcox That was my first thought as well, as the device is in an arid area where crop raising does not happen without irrigation. But if that was th...

Which version of Carlson are you using? In my Carlson Survey 2021 with IntelliCAD the "Label Coordinates/Elevation" dialog under the Annotate menu is...

A LONNNNNNNGGGG time ago I prepared and posted to the website of my then-business a "RTK over Internet series" and the last document in that set seems...