Bob Holmström, Editor, 2934 NW 53rd Drive, Portland, OR 97210 Phone: 503-292-3685, <holmstro@europa.com>

Bill Givens, Sec. &: Publisher, 3850 Ashford Dr., Eugene, OR 97405 Phone (H): 541-465-9311 <Lbanks@ix.netcom.com>

Everett Jones, Treas., Phone: 440-729-4811

Ernie Martt, Founding Editor, Phone: 440-247-6712, Phone: 440-247-6712 <emartt@oh.verio.com>

Page Contents

2 - 6 Analysis of mechanical operation of dual pendulum clock JB2 by Ned Bigelow

7 - 9 Brief History of Two-Pendulum "Resonance" Clocks reprinted from Antiquorum auction catalog "A Tribute to Precision and Complicated Timepieces"

10 - 13 Extensions to the Smith Method of Amplitude Measurement by Bob Holmström

14 - 19 List of articles from the Annales Française de Chronométrie

20 "Rock the boat" submissions by Dallas Cain & Carl Rozycki

20 Information on the Koenig/Niaudet "clock-fork" by Anthony Prasil

NAWCC National in Anaheim - The Horological Science chapter will meet on Friday night, July 5th following the meeting of the Antiquarian Horological Society. The topic will be current horological projects by members. Members and guests are encouraged to share their projects with the group.

There are Rock the Boat items in this issue. These are meant to be comments no longer than half a page on horological topics, including controversial ones, but not personal. This is a quick way to write a short article, convey an important idea or ask a question.

The deadline for material for the next issue is July 15th.

Bob Holmström

Above: Drawing from Apians cosmographicus Liber of 1533, showing how a nocturnal is used to tell the time at night from the Great Bear.

CLOCKS and TIME / NAWCC Home Page / NAWCC Chapter Home Pages

Horological Science Chapter Home Page / HSN Index

Copyright © 2002 UBR, Inc. Data courtesy of NAWCC HSC. Updated 14 May 2002 <clocks/nawcc/hsc/hsn22a.html>