Lever escapement test bench

Each test shown as a manipulation of the model: what do you move, what do you observe, and what value results? Calculated from the original shapes in the correctly adjusted escapement (drop lock ⅛, locking depth ¼ of the impulse-face length).

Slow motion without inertia: positions come from actual contacts; timing does not. Values are in pallet-fork degrees (its rotation angle); balance angles use the watchmaking convention.