With the NOMINAL_WITH_DEVIATIONS mode, PC-DMIS
compares the upper specification operator measured size against the
upper limit of size. It also compares the lower specification operator
measured size against the lower limit of size. Therefore, the Size
command generates two measured values for a given feature of size:
With the TOLERANCE_CODE mode, the PC-DMIS report
mimics NOMINAL_WITH_DEVIATIONS mode, except that it displays the tolerance
code in the dimension header:
With the RANGE_OF_SIZES mode, PC-DMIS compares
a maximum measured size against a minimum measured size and reports
the difference. This mode requires a single measured value. The software
compares that measured value against an upper tolerance.
When ASME Y14.5 is selected, two size characteristics
are reported, the Unrelated Actual Mating Envelope (UAME) and Local
Size.
The UAME is the minimum circumscribed size for
external features (e.g. pin) and the maximum inscribed size for internal
features (e.g. hole).
Local Size:
1. Circular Elements
(default) reports the largest circumscribed circular element (internal
feature/ hole) or smallest inscribed circular element (external feature/pin)
amongst all local sizes.
2. Opposed Points is
an option that reports the largest opposed points distance (internal
feature/hole) and smallest opposed points distant (external feature/pin)
amongst all local sizes.