Horological Science Newsletter 1997-3
National Association of Watch and Clock Collectors, Inc.
Horological Science Chapter #161
Issue 1997-3 June 1997
Ernie Martt, editor. 278 Bentleyville Rd. Chagrin Falls, OH 44022 USA
Phone: 216-247-6712 E-mail: firstname.lastname@example.org
Sec. &: Publisher: Bill Givens, PO Box 1337, Eugene, OR 97405 Phone: 541-465-9311 E-mail: Lbanks@ix.netcom.com
Treas.: Everett Jones, 11929 East Hill Drive, Chesterland OH 44026 Phone: 216-729-4811
The Syracuse, NY, Regional will have a Horological Science Chapter meeting on Friday, August
15, 1997 at 2:30 pm.
There will be an HSC meeting at the NAWCC Seminar in Bristol, CT in October 1997, tentatively
scheduled for Thursday, October 23 at 4:30 pm to 5:30 pm before the conference officially opens.
1 Index, meeting notices
2-4 Gordon Uber has an excellent application summary fo the Allan deviation in measuring clock
performance in his article Stability (Allan Deviation) of Mechanical Clocks for Short Intervals.
5-8 Bob Matthys presents extensive data iin Transient Temperature Effects in a Pendulum.
He placed many small thermistors on the pendulum and plotted temperature vs. time as it cooled.
9-12 Evan Edwards continues to refine his pendulum clock. His first description made up the entire
1992-1 first issue of the HSN. He continues here with A Cure For the Effects of Moisture on a Carbon
Fiber Penduloum Rod and Thoughts on a Accurate Regulator Clock.
12 Bill Scolnik emphasizes the proper order for pouring concrete in his experimental base
for precision clocks.
13-14 George Feinstein has measure and described the Fedchenko AchF-3 Isochronous Suspension and
has has presented detailed drawings of it. In a previous aerticle by Leslie Paton in HSN 1996-4,
speculation was the only alternative.
Above: Drawing from Apians Cosmographicus Liber of 1533, showing how a nocturnal is used to tell the
time at night from the Great Bear.
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