"Third Angle Projection Units = mm" is one of the default text in the title blocks of drawing sheets.

I am in the USA and we use Inches for our parts in our company.

What does "Third Angle Projection Units = mm" mean?
Should I keep that text if we use Inches at our company?

Thanks!!

Time to switch to metric then (joke)! Tou can change the default text by opening the template file and editing the drawing sheet template to make it read "units =inches" or whatever you desire.

....and Third Angle Projection is how the automatic four view layout command will, erm, layout the four views.

Thanks guys.

In the USA, as much as I love metric, trying to fight "imperial units" is like trying to drive on the wrong side of the road. I guess it depends on your customers.

hey, you already do drive on the wrong side in the USA

Clinton,

Sorry I didn't pick up on this thread until 4 months later but as you may have surmised by the previous answers, Third Angle Projection and Units = mm(or inch) should be two separate statements. They have nothing what-so-ever to do with each other.

I am going to change the default sheet templates to correct this misstatement. This should appear in version 12.5. Sheet templates A, B, C, D and E(H) will reflect units= INCH and the others will still be mm the the two statements will be separated.

If I am not mistaken, Japan uses First Angle Projections when displaying an isometric view. (Corrections are welcome.)