G'day
Steve This is an interesting subject you raise.
It's clear that
Tecnico - post WWII - had a clear plan to engage in
an emerging market ...
mass-produced consumer goods.
The obvious choices were radios, mowers, vacuums and polishers, and then
other household electric and white goods. Later, Tecnico became
Pye-Tecnico (c1956)
and then
Pye Indrustries (1959). Pye would be taken over by the Giant
Philips Industriesin about 1977.
The image you supplies appears to be a later
two-rotor job.
Best guess, the first Tecnico floor polisher was a
three-rotor job.
Both are presented here: -
https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/83304/tecnico-the-electrics-c1948.htmlThat's interesting - the similarity to Grandmother's Hotpoint...
Many thanks for adding to the record!

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Jack