Print Table exact size

I have set a simple tabel 5 x 5 cells to print at 2cm square per cell so that the table overall is exactly 10cm square. It looks like it is on the computer screen but when it prints, it is slighty smaller than I want.
Any help as usual much appreciated
thanks
Billy B

Re: Print Table exact size

I have attached a file here as an example, maybe somebody can look at this and see what, if anything, I am doing wrong. I have tried 2 separate printers with the same result - a table which is about 9.5cm square rather than 10cm square as I would like.
I need it to be exact as I want to use the grid as a blank map - and this would equate to a blank 1:50,000 which I can then use for a navigation exercise where grid references and bearings can be measured exactly (if you understand that) - anyway it doesn't work properly if the table is not exact.
I have done it before and it worked without any problem - so is it to do with my set up of the table??
thanks
Billy B