Reply To: Graham escapement

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david pierce
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My perspective is NOT from someone who knows about clocks as I never worked on one. The groove looked as if it was not supposed to be there but I did not know for sure. Hopefully you measured the distances from the clamp block to the impulse units before removing them. The impulse angles can be duplicated with mathematics or by physically drawing the radius of the part and measuring off of a tangent line to that circle. This is only what I would do but there may be other ways to nail the angle down.

david pierceReply To: Graham escapement