Advert-19740407-SMH,p34

Lemair Sewing Machine Advert - Apr 07, 1974 - Sydney Morning Herald, p34
"Lemair sewing machine advertisement for Waltons department store from the Sydney Morning Herald. There is a Lemair knitting machine shown as well as a..."

Lemair Deluxe Zig-Zag
"This looks very much like the Lemair 641 Charger"

Source
Reference found from search on the Sydney Morning Herald records in Newspapers.com

Graphic is detail of free online access to this issue on Google News