Hey guys, I've been cleaning out the shed at home and stumbled across this awesome looking Gauge

After a bit of research I found that it was made by Furuhashi otherwise known as FD Elecman. They're still around and still list this gauge in their catalogue
here(this particular unit has to be at least 15+ years old.
Does anyone know anything about them?
I'm going to see if I can get it working and use it in my Galant. It'd be cool to get an vintage Japanese gauge in the car.
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MINE: 1977 Datsun 260Z 2+2 daily driver (read: rolling project)
HERS: 1975 Mitsubishi Galant A112H Hardtop coupe with 4G63 DOHC conversion now complete!
Check out the build here!THE OLD MAN'S Datsun 2000 Sports (SR311)