Microphone for watch movement

This is a microphone to used for listening to the movement of a mechanical watch.
It plugges into your PC or laptop, just like a normal microphone.
Use timegrapher software (many can be found online) in order to get a diagnose about the performance of the watch.

The microphone will hold many sizes, without the need to remove the strap.
Two pegs holding the watch onto the microphone can be repositioned if needed for getting the best fit.
The (gentle) pushing force of the pegs comes from a rubber band, which is crossing the open space. This makes for a nice 'safety net' incase the watch should slip.
Rotate the microphone to test the movement in 4 positions. Clamp the movement upside-down to test the remaining 2 positions.

The microphone is made out of non-magnetic materials, important for mechanical watch movements.

The main part is the 27mm piezo element. This can be bought online and is fairly cheap. It is soldered to a headphone wire.
The rods are made from a 3mm carbon