I just put this US-made black zigzagger up for sale on the Accessories page together with a couple of spare cams, and that’s reminded me to post this commercial for it from 1956 …

 

Note how the zigzagger’s first of all demonstrated on a Model 15 but at 2.20 it changes to a Featherweight (before it changes again to a Slant-o-Matic).  I wonder if even back then they kept getting FW-owners asking if it was too big to go on their machine, as they still do nowadays?

Whatever, that’s how Singer set about convincing the women of America that their lives could hardly be complete without this new toy, although quite what he with the accent is all about at the end, I can’t imagine …