isn't it possible to open the instrument from the backside?
Like the Nordie instrument.
I am not shure about he Saturno because those instruments did usually not break
Not like those of the Nordies
If i find the time i will have a look at weekend
The mechanism is screwed to the rear of the case and must be withdrawn through the front so the bezel and face must be removed
I took it to a specialist instrument repairer here in Sydney who does loads of instruments from vintage vehicles
He said the bezel is glued on and he could not find a way to remove it
The needle on my tacho has broken and I have seen Saturno instruments on eBay with broken needles so it does not appear to be an isolated incident
The needles are just plastic and I suspect the single cylinder vibration after 30 years is not conducive to long life