Geographic Projection In AutoCAD

Acad dresses up generic Cartesian coordinates to look like other units. The drawing's author sets this up when they start a drawing, but it can also subsequently be changed by anyone, creating all sorts of havoc, since a unit is a unit. A 'unit' van be an inch, a foot, millimeter, meter, mile, etc., so if you change them without scaling the model up or down, you've just changed the real-world size of everything in it.

Unless someone keyed their coordinate system to some other 'real world' location and orientation, I'm afraid you will have to devise a way to do so.

"Michael Bulatovich" wrote in news: snipped-for-privacy@news1.newsguy.com:

How 'local' are the networks? Buildings, city blocks or larger regions? Maybe start by looking for an object in the drawings which has a known dimension in the real world and do a 'dist' on it? Might be difficult with fibre optics ... One of my sons did fibre-optic drafting work using ACAD for Telstra in Oz - I'll ask if there are any conventions.

Wouldn't be surprised if they weren't to linear scale.

Save As dxf and drag the dxf file into a text editor to read what units are being used. You can corelate what you read with what is in the dwg file and take it from there.