As I play double bass for a living, so mostly everyday, my instrument's soundpost can get jolted out of position, or be affected by weather.
The Gewa soundpost setter is perfect designed to be inserted into the soundhole to tap the soundpost to the desired position.
Pros: it is rubber coated as not to scrape the varnish on the table.
Cons: the tapping end could be just slightly heavier for a more precise tap. But most luthiers simply add weight to the tip.
I would recommend this to anyone