That's the thing, the OP didn't said he wants to make it into an external drive

No problem, if you try to access parts that are private and password protected you will be prompted with a window to input the password.

If it's the graphics card the PC will still turn on but it won't show anything but you will hear the hard-disk spinning for example.
If it's the hard-disk the BIOS will still fire up and show on your screen.

If the PC doesn't start at all it's either the motherboard or the power-supply that has given the ghost.

Aren't the connectors the same as on a PC, if so you could just connect it that way.
Although the case and use it as a portable is also pretty nifty

Don't forget other forms of focus aid, a split-screen not correctly spaced/placed also gives a faulty focus "comfirmation" and those are used with MF.

Shhhh don't tell them that Mike, they already hired me as an electrician while I've never done something like that nor have the papers for it.
So far all the work I've done and that was tested has passed the test so I must be doing something right

Yes good one Pete, that's what it said

But they say it can.

I thought it was getting less this month though and I do have a part time holiday job now.

The iPhone thing surely added quite some post to the amount

What about an audio tone that beeps more frequent the closer you get to the right exposure or spirit level.
Something you have with gliders link
I'm sure you would be the middle point off attention

Hard question although there is already a good light meter inside the camera though so why not use that one?

One thing to keep in mind is that the histogram you see with RAW files on your camera and the actually image you see is a JPG preview so don't go on the information you see there as 100% accurate but more as an approximation.

Doug, where do you need the light meter for?
Just an question powered by my curiosity