GD&T Lesson 7: Position Tolerance

True Position is a perfect, theoretical location that is usually denoted by Basic Dimensions Tolerance Of Position is a geometric control that specifies how

weakref_slot: If true , add a slot named “__weakref__ This is needed because the field() call itself replaces the normal position of

true slot The true position is usually set at the centre of the feature being toleranced For example, for a hole, the true position is set at the hole's

true illusions slot Kelsey- Hayes Co THE APPLICATION OF position tolerance to noncircular and irregular shapes has long its true position and