Corrigendum Standard - Inactive-Reserved. IEEE Std 671-1985 provides specifications and test requirements for a non-gyroscopic inertial angular sensor that may measure angular jerk, acceleration, rate, or displacement with or without response down to zero frequency. A standard specification format is provided. A compilation of recommended test procedures, derived from those presently used in the industry, is also provided. Informative annexes cover design features and theoretical principles of operation. This corrigendum makes changes to 4.7.2.6 to delete a sentence that does not belong there, to add a subclause that was inadvertently left out, and to renumber the existing subclauses. Changes are also being made to fix the block diagrams in Annex A, to correct a misspelling of inertia, and to add a missing symbol.