Cambridge Instruments Slide-Wire Potentiometer

[Yorkie]

Those wire-wound resitances in the box are never going to drift high in value as would carbon composition ones Alan.

When all of this old gear is opened up to reveal the inside, often they look as good as when they were made, even though externally they may have been through the wars a bit. I have a Taylor sig genny, and externally it's not much to look at. Internally, it looks like it's just come off the assembly line.

I can see the attraction of test gear to those who collect it. The Americans made some wonderful stuff that goes for bargain prces, but the killer is the P&P, plus risk of damage in transit.