Here's the tablet with the biggest screeen that I know of:
http://www.amazon.com/nabi-Big-Tab-HD-24/dp/B00OR29TAY

You'll have to research if the screen will work for you.

I'm my experience there is no screen that would be dim enough to meet 
those specs.  Your eyes are so sensitive after an hour in a totally dark 
room that an LCD screen would essentially have to be off to not blow you 
away for at least a few seconds till your eyes got used to it, but if 
the back light is off, you wouldn't be able to see the screen at all.

Brian Cluff

On 03/09/2015 09:27 AM, kitepilot@kitepilot.com wrote:
> Hello there:
> I need the tablet with the biggest screen (Android or Mac) that can be
> visible in direct sunlight as well as dim(able) to the point of being
> visible under *VERY* low light without blinding brightness.
> This is the test for brightness:
> Stay in a totally dark room for an hour and then turn the tablet on.
> If you get a barely uncomfortably blinding screen, it is too bright.
> Price unimportant, I hope that I don't have to go Mac, but my Android
> phone hasn't had a shining performance either...   :(
> Thanks!
> ET
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