Last seen: June 4, 2026 6:02 pm
@john-hamilton I remember seeing similar work in the early 1980s at Draper Laboratory (the fountainhead of inertial navigation) in Cambridge, MA.
This might help:
I should get that book ("The Little Excavator") to go with my Takeuchi TB016.?ÿ ?????ÿ
And going in the opposite order, "TV Makes Dull Company" ?? learned in the context of boating. ?ÿ
@geeoddmike I almost mentioned Chuck Counselman in my previous post; he's quite a cool guy. I remember attending a small seminar he gave in the late 1...
And to really surprise a lot of people, we can point out that the design work for GPS began almost 50 years ago. I think 1973 was the official start o...
The 30 years of Block II sure is a long time! Maybe the title of this discussion and the related article should be edited to show that they refer spec...
@bill93 you probably already know this, but Mulford's "Boundaries and Landmarks" discussed some of these details, at least as far as conventions and t...
@drratiug-survey here's a PDF of the manual for that instrument. If the attachment doesn't work, let me know if you (or anyone else) would like me to ...
That's a stunning description. It would have been worthy of inclusion in Donald Wilson's book "Deed Descriptions I Have Known.....But Could Have Done ...
@hack and @jamesfl ?? It was a couple of years ago that I was looking for LIDAR data for Massachusetts and Connecticut. I just now did a quick search...
Depending on where this is, might the information already be available in a LIDAR database? Airborne LIDAR supposedly simultaneously discerns ground a...
1662 is pretty good, but here's one from 1648 (Massachusetts South Middlesex County online Registry of Deeds, Book 1 Page1).
Can you shave with it too?
I had a feeling that the stone bore some sort of identification for the baseline, but that's quite impressive. ?ÿ
What's the rock-like object near the foreground pedestal in the last photo?
It looks to me like the "Minimum Standard Detail Requirements for ALTA/NSPS Land Title Surveys (Effective February 23, 2016)" clearly require least sq...