OneGuyFromBarlick

Almost in the ball park!

Jumbo jet practice.

That's right Kev. They had to prove the concept that 747 pilots could see where they were going when taxiing.
Next one?

What is it?

Some sort of extraction vent but knowing you probably more exotic than that.

Headlight screen for during the blackout.

Now why didn't I think of that.

Kev has it right first time. Next one?

What is it?

No takers?

It's a 'fuel saving' device. Magnets.

Curses! You're right. Try this one.....

This one seems to be defeating you all!
(I used one for years....)

Not sure if the top has slats in or it's just a paint job. Anyway, it look like a combination tea and sugar tin for a lunch box or bait tin if you prefer.

Ah, I thought they were slits in the lid but now you come to mention it that could be paint blocking out the sugar and tea labels.

Yes I blocked out the 'tea and sugar on the lid! Ian is right, two compartment tin, one end for sugar and the other for tea.
Next one?

All right it's a drill. But why the flutes on the shank?

I think it’s for running coolant through.

I'll come clean Gloria. That's a possibility and I can't rule it out because I don't know. I've been trying for years to find out why the shank is fluted and failed miserably so as far as I am concerned you have it because at least you tried!
Next One?

It better directs the coolant.

To give cutting edges on the tip,would be awkward with a solid bar.

Sorry you mean the other end

Now I've looked again I don't think that is the shank because it's tapered,I think it's been made for a specific deep hole,the drill is also slightly thicker in the middle,the shank looks like it's just the small square bit at the end,,,my theory

No Tom it's a normal 3 Morse taper shank drill but the difference is that the flutes have been carried up the shank.
I thought at one time it might have been for using the shank as a reamer to clean up the Morse taper on the spindle but that wouldn't work because the shank is left relatively soft and wouldn't cut.

I think I could be right.