Piggybacking 74LS logic chips to confirm a suspected fault

[tony duell]

> >> Aren't in fact, all wirewrap (board+pin) board sockets machine-pin?
> >> I don't recall seeing one that wasn't.  Given the great track
> >> record of wire-wrapped designs that says something, surely.
> >
> > No, some were not machined.
> 
> Got any examples?  I've never seen a press-fit wire-wrap socket pin that
> wasn't.

These aren't individual pins, but complete DIL sockets. An example is shown
in this E-bay listing : 

http://www.ebay.co.uk/itm/20-pieces-New-16-Pin-Cambion-Wire-Wrap-DIP-Sockets-Gold-Pins-/262081127835

-tony