Solidworks Iso — Dimensions

Here is how to set it up correctly, avoid common pitfalls, and dimension faster. Many users change dimension styles one-by-one using the Properties Manager. Stop that.

Have you ever had a drawing rejected because of the wrong projection angle? Share your war story in the comments below.

If you’ve ever sent a drawing to a European manufacturer only to have it returned for “incorrect formatting,” you know the pain of dimensioning standards.

| Feature | ISO Standard | Do NOT use ANSI | | :--- | :--- | :--- | | | Comma ( , ) | Period ( . ) | | Unit symbol | Space before mm (e.g., 25 mm ) | No space ( 25mm ) | | Arrow size | 2.5mm long (very small) | Large (3.5mm+) | | Radius symbol | R (in front of number) | R (behind number) | | Projection | First Angle (Symbol: Trapezoid) | Third Angle | Final Verdict Don't force ANSI habits into an ISO workflow. The moment you see a comma instead of a decimal point, you'll know your drawing is ready for global manufacturing.

Go to Tools > Options > Document Properties > Drafting Standard . Set the drop-down from ANSI to ISO .