DynaPoise is a web-based tool to assist in dynamically poising a watch's balance wheel.
Dyanmic poising is the process of adjusting the balance wheel of a watch, based on
measurements obtained from the watch while it's assembled and running, to acheive optimal
poise of the balance; i.e. the center of gravity of the balance wheel is aligned with the
center of the balance staff's rotational axis.
DynaPoise allows you to set up a virtual representation of your watch's balance wheel and input the
rate measurements in eight different vertical positions. DynaPose then calculates the current poise
of the balance wheel and shows you where on your watch's balance the heavy and light spots are
located, allowing you to make the appropraite adjustments to bring the balance into poise.
If you are not familair with the concept of dyanmic poising, I suggest reading Paul Silvia's
excellent "Dyanmic
Poising How-To" series on the subject. Another invaluable resource is Dewey Clark's "Watch
Adjustment".
Dynamic poising should only be performed when the watch has been serviced, the escapement set up
correctly, and the watch is otherwise running well.
DynaPoise was developed with antique pocket watches in mind, but can be used with any watch with
balance wheel and lever escapement.
Version: 89.1.0
Copyright © 2026 Jerold Lewis. All rights reserved.
DyanPoise is provided as-is, with no warranty of any kind, and is not a replacement for
knowing what you are doing.
