Screwmachine
Titanium
- Joined
- Mar 8, 2001
- Location
- Switzerland
This is a bit off the beaten path but I know there are some serious electronics guys here. This little thing is for detecting magnetism in watch components. It runs off a 9v battery, the base is cast bronze. The arm/spring carries some sort of sensor, and a part is placed on the cover over that, and it gets "boinged" and the meter shows if magnetism is present and how much. There are two settings, the second will detect magnetism in a screw 0.30mm diameter 0.60 long that has only been in proximity of a normal magnet, or in the smallest hairspring.
It's super cool, the company Greiner made all sorts of very innovative equipment for watch work over the years, but I'm dying to know how it works. Does anyone have a clue?
On a more machinist tack, the control knob is something totally new to me. The switch shaft is smooth. The knob has an aluminum insert, anodized, with a tapered mouth. A second anodized aluminum insert with female threads on the closed end and slits and corresponding taper fits into the knob. A firm but normal tightening of the screw secures it on the shaft extremely well. Seems pretty slick!
It's super cool, the company Greiner made all sorts of very innovative equipment for watch work over the years, but I'm dying to know how it works. Does anyone have a clue?
On a more machinist tack, the control knob is something totally new to me. The switch shaft is smooth. The knob has an aluminum insert, anodized, with a tapered mouth. A second anodized aluminum insert with female threads on the closed end and slits and corresponding taper fits into the knob. A firm but normal tightening of the screw secures it on the shaft extremely well. Seems pretty slick!