Evaluate diameter full 360-degree circle and 180-degree semicircle.

[[K...]]

How calypso evaluate diameter of full 360-degree circle and 180-degree semicircle.

[[Ma...]]

Calypso uses some hidden formulas to get that, but it depends on used evaluation method.

I wonder how you on ASME are handling circles/cylinders/cones on less than 180°deg

[[K...]]

Thank you Martin:

May I know how to report UF x2 Ø67 callout, and how to handling less than 180°deg.

[[Ma...]]

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By UF you mean United Feature? I would recall points into one feature.
For ISO is used Gauss - so no problem with calculation, but for ASME - IT/OT can not be done on less than 180°
I am the one who asks ASME people how they do it 🙂

[[K...]]

I measured diameter of Can (UF x2 Ø67mm) from a center reference using two semicircles (10° ~ 170° , & 190° ~ 350° ) due to grooves but reported 3 different diameters:

• 1st based on full circle (both semicircle),
• 2nd based on top semicircle ( 10° ~ 170° )
• 3rd based on bottom semicircle ( 190° ~ 350° ).

I noted that the full circle diameter was smaller (approx: 0.200mm) than both semicircles. I also noticed both semicircle centers are out from the center (concentricity higher than full circle).

What is best way to report (UF x2 Ø67mm) callout.

Thank you

[[Ma...]]

If it's UF, then you should report one measurement of complete circle using both semi-circles - Without UF you would have two separate circles divided by groove/s

[[K...]]

Thank you very much

[[K...]]

But it is UF x2 (what is x2 means)

[[Ma...]]

I am not sure - haven't seen a drawing nor a part, so my guess is limited.