One of his electro-mechanical units was on display in Victoria, Australia. Most amazing assemblage, you can sort-of get the idea from things.

I read online that at his end, Baird was proposing a TV scan-rate we'd class as HD quality, which lost out to a 405 line standard (which proceeded 625/colour)

There is also a quality of persistence in his approach to things, he was the kind of inventor who doesn't stop inventing.