I have one, the manual is pretty useless and I lost it years ago. The only thing you might need the manual for is for doing load testing with the shunt adapter which i have never used. I have only used it for setting point dwell since the large sweep face makes it easy to dial it in perfect. Of course no use for that function anymore with Electronic ignition the norm.
I will say the meter being large is handy but the case is largely empty as mentioned, lots of storage room for cables and accessories in the back storage cage though.
Its a collectors item if you ask me, my Fluke 88 is far more useful.