Hello All,
On this list there has been quite a bit of interest in Capuchin dials
and I remembered another one of which principle a picture is attached.
It was sold by Pollähne, Germany, and it was made out of plastic
material or perspex.
I have seen it years ago, but I haven't an exapmple of
Hello Tom
I started doing precisely what you suggest bellow. What I found was kind
of unexpected. They are still quite pricy in Brazil. A brand new, digital,
German-made Theodolite would cost around US$ 3,000.00 while
an old piece would still cost around US$ 2,000.00 (about 30% less now
after
Hello JOHN,
I think the difference between my reported time and that given by Jim
Morrison converges very closely the same value, if as I suspect, Jim has
incorporated DeltaT in his calculation i.e., the difference between
Dynamical Time and Universal Time. I know that I have not, still
Somebody was interested in the Sundicator. I've got one.
I scanned the Sundicator and put an image on my web page:
http://linux.bbn.com/~koolish
Click on the small image to get the big image (296K).
Bob,
What a great dial. I have looked at the photos and have a few questions and
comments.
It appears there is an upper half of the meridian as you said. I suspect
this missing piece is the same shape and size (at least at its ends) as the
lower half of the merdian. This is evident by how the
Hello, Fernando,
I would think that the best sources for old surveying instruments would
be small, privately owned engineering companies which have been in
business for the last 30 to 50 years. They may still have some of the
older instruments from the days before they switched over to digital
