[QuadList] Weekend Mystery Pic for 3/12/11

[Don Norwood]

For this weekend's challenge, identify the function of this control and what  machine it is on.  As far as I know, it is the only control of this design on any quad machine.



Don Norwood
Digitrak Communications, Inc.
www.digitrakcom.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://quadvideotapegroup.com/pipermail/quadlist_quadvideotapegroup.com/attachments/20110312/9b0f6cf6/attachment-0004.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Mystery.jpg
Type: image/jpeg
Size: 18168 bytes
Desc: not available
URL: <http://quadvideotapegroup.com/pipermail/quadlist_quadvideotapegroup.com/attachments/20110312/9b0f6cf6/attachment-0002.jpg>