[time-nuts] Timing for Pendulum Astrolabe?

[Dana Whitlow]

I recall seeing an Android app several years ago which could at least
display LMST, but I could never use it.  It would only accept position via
the built-in GPS, not by manual entry as an alternative.  My cheap
mini-tablet's GPS receiver was so insensitive that it was virtually
unusable.  Curiously, last summer it came to life and worked well
for about half an hour, then quit again.  Go figure...

Dana


On Sat, Dec 1, 2018 at 7:34 AM Gregory Beat via time-nuts <
time-nuts at lists.febo.com> wrote:

> Is David White still in business?
> YES.  David White’s SitePro is now based in Lafayette, IN (near Purdue
> University).
> http://www.dwsitepro.com/
>
> The David White name is known for high-quality surveying equipment and
> optical instruments. The David White Company was founded in Milwaukee,
> Wisconsin, in the year 1895 by Mr. David White. The founder was born in
> Hungary and his occupation was that of an instrument maker. After
> immigrating to the United States he started the company with the help of
> established relatives in the Milwaukee area.
> In 1900, he organized a partnership with Charles Klaweither, as they were
> both involved with manufacturing drawing and surveying instruments. The
> company was incorporated on June 22, 1912 and it's products became widely
> recognized for craftsmanship in specialized optics along with the name for
> high quality.
>
> How old is this David Clarke Astrolabe?
> Most likely the last number (on mfg. plate) is the internal mfg. serial
> number,
> which would suggest a 1945 manufacturing date.
> http://www.surveyhistory.org/how_old_is_my_david_white.htm
>
> greg
> chicago
> ==
> Date: Fri, 30 Nov 2018 17:38:12 -0800
> From: Brooke Clarke <brooke at pacific.net>
> To: Discussion of precise time and frequency measurement
>    <time-nuts at lists.febo.com>
> Subject: [time-nuts] Timing for Pendulum Astrolabe?
>
> Hi:
> I'm learning about the 60-Degree Pendulum Astrolabe:
> https://prc68.com/I/PendulumAstrolabe.shtml
> The idea is to mark the time when a known star crosses the 60 degree
> elevation circle.
>
> Is there an Android app where I could just push a button and have the
> local mean sidereal time recorded?? Lacking LMST is there an app for any
> other time scale?
>
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