# measure_constraint_residual_rconstraintresidual ## API Definition ```python def measure_constraint_residual_rconstraintresidual(assembly: Assembly, constraint_id: str) -> ConstraintResidual ``` *Source: operations.py* ## Import Surface - top-level: `from simplecadapi import measure_constraint_residual_rconstraintresidual` ## Description Measure residual for one assembly constraint without mutating the assembly.