EXPLORE MBD
CAD TOOLKIT
DICTIONARY
ABOUT
GLOSSARY
INDUSTRY STANDARDS 
Inner Boundary
IB
ASME Y14.5 :
Dimensioning and Tolerancing
A worst-case boundary generated by the collective effects of the smallest feature of size (MMC for an internal feature of size, LMC for an external feature of size) and the applicable geometric tolerance.
See Also:
Feature of Size
,
Maximum Material Condition
,
Least Material Condition
,
Geometric Element
,
Tolerance