Display full version of the post: Auto CAD Units

HenryT
05.05.2015, 08:50


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Good morning all,



I have been working with Auto CAD for quite some while now
and I still get stuck on this problem. I get given a loft of drawing that were
done in 3 party software so when I receive a drawing that I need to work on I
always start off with the what the current scale a the drawing is.(sometimes
the drawing gets done in meters in the 3 party software and when I pull it into
Auto CAD it interprets the meters as millimetres which means I basically have
to scale the current object with a 1000 so that it would be the correct size. I
have always done this by checking the scale of the objects in the current
drawing. I have attached a dwg. where I adjusted the units three times
(Millimetre ,Meter and Kilometre) but when I draw A line of 1000 units long
,in  all three unit types the line is the same length .Common sense tells
me that the line drawn in meters would be longer than the line drawn in millimetres
,same when it comes to the length difference between the one drawn in meters
and the one line in kilometres.

So basically when I open a dwg. how would one know the
current size (when measuring ) of an object  as well as how would I change
my drawing units so when I measure an object the current dimension displays
either millimetres ,meters or whatever I would like the units to be.



Can you please assist me with this problem?

uploads/151088/Henry.dwg















































































































































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John Connor
05.05.2015, 11:21
You check the scale of objects in the drawing?  Why don't you use the -DWGUNITS command?  It will tell you what units were used to create the drawing.

HenryT
05.05.2015, 12:32
Hi John,Thank you very much for your quick response. I will have a look and see if this will resolve my problem.

Lokislady85
07.05.2015, 16:36
If all else fails find something in the drawing that you know its true size (i.e. doorways are generally between 3 and 3'6") and see how it shows up using the MEASURE command/button. 

John Connor
07.05.2015, 16:58
The OP is working in metric units.