In a feature control frame, the compartment on the extreme left contains ____.

A) allowable tolerance
B) geometric characteristic symbol
C) specification of data
D) tolerance value

Feature Control Frame

A rectangular box on engineering drawings containing symbols and numbers specifying the geometric characteristics and tolerances of features.

Geometric Characteristic Symbol

A symbol used in geometric dimensioning and tolerancing to represent a specific geometric characteristic that is to be controlled.

Allowable Tolerance

The range of variation permitted in a part's dimension, which ensures it will still function correctly without compromising safety or performance.