OneGuyFromBarlick

No change. I'll get my coat.....

I am using Chrome on my phone, I'll check Chrome on Windows and Firefox on Linux a bit later.

What is it?

That’s a lovely box.

AVO multimeter box?

You're right Gloria, it's beautiful as is what is inside it.
Sorry Ian but no.

No takers? You've seen it before!

I really don’t know. Don’t think it can be a measuring device as it can be carried, and could lose its accuracy.

Mill related measuring device?

It is for carrying a measuring device but not necessarily mill-related although it could be in a mill......

It must be an expensive piece of kit to be in a box like that.

I think you're right Gloria, it would cost an enormous amount if it and its contents were made today!
One last clue, you've seen me using it on a steam engine!

Is it for checking flow rates of any kind? Grasping at straws here

Is it for testing pressure?

You're both on the right track. The instrument combines measurement of both flow and pressure combined into a specialised reading. You are so close!

It looks as though it has defeated you. I shall come clean around midday.

Is it a vortex flow meter?

I don't know what one of those is Peter! Last big clue. this was made by Dobbie and McInnes at Glasgow....

Pressure indicator gauge?

Well done Gloria, you got there. It's an indicator for drawing a time/pressure graph of what was happening in a steam engine cylinder.
Now we need another object.

What is this?

Is it the code breaking machine at Bletchley Park?

I have been to Bletchley Park and it doesn't look like the rebuilt Bombe machine to original plans as below:





All the original machines were broken up at the end of the war on Churchill's orders, subject to their ULTRA designation. The operators were given a set of sidecutters and other hand tools and told to disassemble so that no parts could be identified as belonging to the original equipment.

I know what it is but I have cheated with Google so I wont spill the beans.

Nearest thing I have seen to those objects in the case are inclinometers but why so many? I have no idea.....