[sdiy] What is this??

[fredw at lmi.net]

> Hi list, i've had this thing for a while and i really
> wonder what it is;
>
> www.sdiy.org/knas/temp/stuff3.jpg
> www.sdiy.org/knas/temp/stuff2.jpg
> www.sdiy.org/knas/temp/stuff1.jpg
>
> It came out of an old tek-scope i think. It looks like
> it's some kind of tuneable inductor bridge, all of
> them are connected together..

Just a wild guess - perhaps a delay line?