This is a very rare / unusual original Blue Print from the Balfour Marine Engine Company Ltd. 

Would look extremely cool framed and on the wall of your garage / workshop / study / office etc. 
The object itself is more at the top of the print and is interesting to look at with dimensions and detail listed below. 

The item is called a Drilling and Milling Fixture.

Its in very good condition and has been folded to store which would iron out i am sure. 
Please see pictures for a better idea of condition as they make up part of the sale.

The measurements can be seen in the pictures and as you will see are approximate as you would probably want to trim it when framed. 

I have other Blue prints for sale so please have a look at my other items for sale and i can sell a bundle and send in one package.

Thanks for looking.