This is the Sekonic’s very popular L-8 co-branded and sold by Australian Hanimex. The only difference is Hanimex logo. I bought mine when in Brighton UK for a short period. Very responsive at that ime, sadly, it’s down with 2 stops, which makes me reluctant to use anymore. If anything, I prefer to use the newly refurbished Weston Master III, which is trusty to the level that I feel comfortable with.
Check the manual download page.