The movable bridge in its closed position must be proportioned like a fixed bridge, but it has also other conditions to fulfil.
As soon as it is released it falls back into a closed position.
They are so pivoted that they fall into a closed position as soon as released.
The bolt-clamp c holds the hinged part in the closed position.
When in closed position, the platinum contacts should make contact with each other over their entire surfaces.
Pull out choker to closed position and start engine in usual manner.