REPOST: Display and User units, Scaling, Measuring Paths, Importing PDF

People,

I didn't get an answer to this a year ago and the problem has come again 
so I thought I would repost to see if I have any more luck with 
responses this time:

If I produce a new drawing on an A4 page with Display and User units in 
mm with a scaling factor of 1.0, I can draw a rectangle of XxY and when 
I use the Visualise->Measure Path Extension with a Scale Factor of 100 
and Length Unit in m - I get exactly the right dimensions for the 
rectangle for its perimeter length and area - all good!

However, I have imported a surveyor's map from a PDF file into Inkscape 
SVG (using defaults) and I need to be able to draw rectangles on it as 
above in mm (like my test) that will correspond to m in the real world 
but the drawing is on an A3 page and I have tried scaling and everything 
else I can think of and Googled a lot but I still can't do what I was 
able to do with my little test case.

So:

How can I convert the drawing to be on an A4 page with mm units so the 
mm correspond to m in the real world and the Measure Path Extension will 
give me the correct result in m and sqm?

The original PDF says the scale was 1:500.

I am using:

   Inkscape 0.92.3 (2405546, 2018-03-11)

Thanks,

Phil.
-- 
Philip Rhoades

PO Box 896
Cowra  NSW  2794
Australia
E-mail:  [email protected]

------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
Inkscape-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/inkscape-user