Inquiry Regarding Nominal Angle Discrepancy in ZEISS CALYPSO

[[Ph...]]

Dear All

Our We team would like to inquire about a discrepancy in the nominal angle values displayed in ZEISS CALYPSO between the True Position and Features windows for Feature A2.

The values displayed are as follows:

• True Position – Nominal Position (Angle): -21.000°
• Features – Nominal Angle: 339.000°
• Actual Angle: 339.225°

We understand that -21.000° and 339.000° may represent the same angular orientation, as they differ by 360°. However, we would like to confirm whether this is the expected behavior in ZEISS CALYPSO.

Could you please clarify the following points?

1. Why does the True Position window display the nominal angle as -21.000°, while the Features window displays it as 339.000°?
2. How do the Positive Orientation and Negative Orientation settings affect the angle definition and measurement calculation?
3. Which angle setting should be used to ensure the True Position evaluation is correct according to the engineering drawing?
4. Could this difference in angle representation affect the True Position calculation or measurement results?