Hi guys.
I just started a new software (TopSolid ... to joy!)
I know that this is not the core target here, nevertheless, I have a more " generalist " question:
I find myself with a graduation as part of my drawing and I can't understand what it's for. Have you ever used that?
It's a graphic scale.
The frame is standardized with fixed values that allow you to cut the plan and that allows you to locate an area (a bit like a chess board.
This " frieze " at the bottom allows you to measure more finely than the large tiles form A1, A2, B1, etc...
These are old standards, preserved or not, with the DXF or DWG that is now available with a PDF and which allows us to measure
Hello,
Normally, it is a false ruler in centimeters that allows you to precisely control the scale of the sheet.
I am sometimes happy to see it on PDF files of our customers or suppliers, it allows us to measure with more precision (by applying the right scale factor) undimensioned geometries.
Hi !! coin37coin,
At the time, it was used as a reference point when folding paper MEPs, that's what it was before, now we almost don't print at all.
See also the cartoonist's guide "memotech" page 16 or " the cartoonist's guide - The Knight " page 9 (Editon 1989-1990).
2004 edition, see screenshot. …
…@+.
AR.
Thank you all.
1st time I've seen this in almost 20 years of BE. It just goes to show that we're never safe from learning things 
Hello
It seems to me that this is a real rule, the equivalent of a kutch. In the metal framework, when the plans are loaded, it is practical on a construction site or on a walk with the plan in hand
I don't know if it's still standardized, handy if your suppliers don't send you a DWG or DXF.
I'm not in favor of it, if the printing is badly done it distorts the extracted values. These are standards from another era. But be careful not to manufacture with 
it.
I prefer that my client comes back and asks me for information. We tend to put isometric views and I had the trick with a supplier who took my ratings on this view. 
