SYMMETRY

TYPE OF TOLERANCE	CHARACTERISTIC AND SYMBOL	DATUM REFERENCE	IMPLIED CONDITION	ALLOWABLE MATERIAL MODIFIERS	TOLERANCE ZONE SHAPE	KEY POINTS TO REMEMBER
LOCATION	SYMMETRY	YES	RFS	NONE	TOTAL WIDTH	USE POSITION IF POSSIBLE VERY EXPENSIVE

SYMMETRY:
The condition where the median points of all opposed or correspondingly located elements of two or more features are congruent with the axis or cenerplane of a datum feature.

SYMMETRY TOLERANCE ZONE:
Defined by two parallel planes which are equally disposed abiut the datum axis or plane within which all of the median points of opposed elements of the feature must lie.