NOTE: Suspensions do not have to be exact in lengh, if the clock runs slow then raise the pendulum bob with the screw.
These top hooks are all for a wood stick style pendulum except the letter "I" and "J" units. For the most part you would have the wood stick in either 1/2 inch or 1 inch width and put this top hook on it by bending the tabs over as a friction fit. Then the pendulum is all set to be able to hook to the leader. Note: The pendulum assembley consists of the suspension spring on the top, then comes the leader, then comes the pendulum with its top hook attached.
To get the length of the leader on a German movement, get the CM number off the back plate of the movement. This measurement is the approximate length from the top of the movement to the bottom of the pendulum. So if you measure the pendulum tip to tip in inches and then add an inch for the suspension spring, the multiply times 2.54 it will give you the CM length of all but the leader. The remaining length from this measurement and the CM length from the back plate, will be the approximate leader length.
A = Works with top hook H and I and J / Suspension style A
B = Works with top hook D and E / Suspension style B
C = Works with top hook D and E / Suspension style A
D = Works with top hook B / Suspension style A
E = Works with top hook A / Suspension style A
F = Works with top hook B / Suspension style A
G = Works with top hook B / Suspension style A
H = Works with top hook B / Suspension style A
I = N/A
J = Works with top hook H and I and J / Suspension style A
K = Works with top hook B / Suspension style A
L = N/A
We offer the above bobs with various patterns. These are for mantle movements with the F-S regulator that you can adjust the timing.
Item # PD10
This pendulum bob is threaded on the bottom with a rating nut for easy timing of the clock. This can be used on mantle clocks as well as certain wall clocks such as a banjo. Measurement is the diameter of the bob.
Item # PD5
Gold tone brass pendulum with leaf decorations on the top of the pendulum bob. This pendulum measures seven inches in length and has a 2 1/2 inch diameter bob that weighs 3.5 ounces. Used with some modern wall clocks and 31 day clocks.
Bob is 35mm in diameter and weighs two ounces.