Dimension symbol definitions

[SEC_CAD]

In a 2D DWG it is possible to edit the dimension text and add symbols and some standard abbreviations. Where does Inventor get its list of abbreviations from? I cannot find a definition in help or the forum.

e.g. LE = Linear Element

If I wanted to describe a slot with a callout, instead of dimensioning it, would this be used like Ø3.0LE5.0 (where 3mm is the width and 5mm is the centre-to-centre distance).

Or have I completely misunderstood the meaning of the "LE" symbol? A page of definitions, linked to the help file, would be useful.

[gcoombridge]

I'll admit first off that I never use any of those and haven't educated myself about what most of them mean! But if I was going to do this I would dimension the diameter Ø3.0 add the symbol LE  and then edit the text and add the parameter the the slot length following it:

[SEC_CAD]

Thanks @gcoombridge . That is what I was suggesting.

For the slot example I decided that if I didn't know what LE meant then how can I expect my reader to know. I deferred to BS8888. 

I ended up dimensioned the heck out of the multiple slots at different sizes on my part. Messy but clear (if that isn't an oxymoron).

Still not sure where Autodesk got the list from. It doesn't match any books or standards that I have read. "LE", and other abbreviations on this list, do not even appear in Wikipedia. If Autodesk thought that they were useful they could have added them to Wikipedia themselves.

[johnsonshiue · Accepted solution]

Hi! I suspect these are carried over from AutoCAD Mechanical standards. They seem to be hardcoded.

Many thanks!