On Sat, Nov 1, 2014 at 11:23 AM, Larry McDavid lmcda...@lmceng.com wrote:
I gave a presentation on the Dent Dipleidoscope at the Harvard conference
of the North American Sundial Society in 2013. If anyone is interested, I
can provide a pdf of that presentation. The presentation includes
I would be quite interested in reading your presentation also.
Thank you
Paul
WB8TSL
On Sat, Nov 1, 2014 at 3:14 AM, Sanjeev Gupta gha...@gmail.com wrote:
On Sat, Nov 1, 2014 at 11:23 AM, Larry McDavid lmcda...@lmceng.com
wrote:
I gave a presentation on the Dent Dipleidoscope at the Harvard
Hi Larry:
Yes, please.
Here's my Dent Dipleidoscope:
http://www.prc68.com/I/Dent.shtml
Mail_Attachment --
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
http://www.prc68.com/I/DietNutrition.html
Sanjeev Gupta wrote:
On Sat, Nov 1, 2014 at 11:23
Yes, that is one of the original 1843 dipleidoscope designs. All the
original black finish seems to have been polished away, however.
This original design used a lot of expensive brass. Later models used a
cast brass {scroll base and a dipleidoscope body machined from a round
brass bar; this
So, what did railroads, clock makers and financial institutions use for
accurate time before 1900? If you were in London, you could subscribe to
a service in which a lady carried a mechanical chronometer to the
Greenwich Observatory in the morning and then made a circuit to
subscribers,
