From: Bob Rosenbloom: Wednesday, June 24, 2015 2:28 PM
I have no idea why DEC made their own switch out of
the reeds. Seems like it
would cost more than a standard switch so they probably had a reason. Possibly
they thought it would not wear as much with thereeds having millions of
operations rating.
I'm not sure they made their own. There's "Angley" or some such
written
around the corner from the DEC part number on the bottom plate. (Partially
obscured by the mounting screw.) I took that to be a maker's mark, though
I didn't find any surviving reference to them online.
Vince