mysterious delay lines

[Hcabnivek at aol.com]

In a message dated 98-08-04 06:31:20 EDT, you write:

> Looking through my bin of mysterious surplus parts, I've found these
>  oddities: little plastic rectangles marked "delay line".  
>  
>  The symbol upon these is a diamond, with "KSS" inside.  They model numbers
>  at MS-15 and MS-19.  There are 4 leads coming out the bottom.

Yeah, I have a few of these things too, and I'd like to know as well.  The
ones I have are tear-outs from several video cassette recorders.  If you
extract the guts from the plastic case you will find a (I guess) quartz waffer
with the wire leads fused to the edges.  Each pair of leads is attached to
opposite sides of the waffer, which on the ones that I have, is about  2cm x
3cm.  I find it hard to believe that these are "delay lines" in the sense that
we in the synth world think of them.  Any of the electro-Gurus out there know
what these things are for?
Kevin