You can see a video closeup of an actual cycling Verge escapement such as Deacon's "Van Wyck" at;

http://www.youtube.com/watch?v=S8LOVjIXiKg

The main point of watching the Verge run is to see that the wheel with sawtooth facing is ALWAYS in "touch" with the "flags" driving the Balance Wheel staff. While these did "keep time", they deviate drastically (As I am learning with Deacon's watch)because the variables associated with "sliding friction" are almost limitless.

This was completely eliminated by the "Free Swinging Balance wheel "Anchor" escapement design used on US-made watches from the 1860's on. Watch the next video at;

http://www.youtube.com/watch?v...bNLE&feature=related

you will see how the pallet fork works with the roller jewel to "Kick" the balance wheel back and forth in a "free swing". Frictional deviations are not a factor in a clean running "Anchor" movement. This was the reason we could make Chronometers and Railroad watch as accurate as they were and are today.

Very interesting, Dave....and Thank you for putting it here for us to see....

Regards,

Jerry