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
unusable. Curiously, last summer it came to life and worked well
for about half an hour, then quit again. Go figure...
Post by Gregory Beat via time-nuts
Is David White still in business?
YES. David White’s SitePro is now based in Lafayette, IN (near Purdue University).
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
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.
Date: Fri, 30 Nov 2018 17:38:12 -0800
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Timing for Pendulum Astrolabe?
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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