The level of metal working skill is impressive and predates modern capability in the seventeenth century by around eighteen hundred years. Yet that is also an indicator of need and demand. I have no reason to think that the skills ever went away even as mere jewelers.
This is all about simple metal cutting and shaping with fine filing which are all Bronze Age skills. The challenge is in the calculations and those go back into the deep bronze age as well. This was obviously an expensive and rare tool for its time and place. Someone important was on the ship.