1. AN APPARATUS FOR ALINING WARP FAILURE DETECTORS, HAVING AN ASYMMETRICAL CONFIGURATION, IN ALTERNATINGLY MIRRORINVERTED RELATION, EACH DETECTOR HAVING AN UPPER AND A LOWER APERTURE, COMPRISING: A FIRST HORIZONTAL BAR, A SECOND HORIZONTAL CARRIER BAR SUBSTANTIALLY PARALLEL TO SAID FIRST CARRIER BAR, SAID FIRST CARRIER BAR EXTENDING THROUGH THE UPPER APERTURES OF A GROUP OF DETECTORS PLACED IN EQUAL RELATIVE POSITION AND HANGING ON THE FIRST CARRIER BAR, SAID SECOND CARRIER BAR EXTENDING THROUGH THE UPPER APERTURES OF A SECOND GROUP OF DETECTORS PLACED IN EQUAL RELATIVE POSITION AND HANGING ON THE SECOND CARRIER BAR IN MIRROR-INVERTED RELATION TO THE DETECTORS OF THE FIRST GROUP, MEANS FOR ALTERNATINGLY CONSECUTIVELY SEPARATING THE OUTERMOST DETECTORS OF THE FIRST GROUP AND THE OUTERMOST DETECTORS OF THE SECOND GROUP AND FOR MOVING THE SEPARATED DETECTORS OF THE FIRST GROUP ON THE HORIZONTAL FIRST BAR AND FOR MOVING THE SEPARATED DETECTORS OF THE SECOND GROUP ON THE HORIZONTAL SECOND BAR, AND GUIDE MEANS ENGAGEABLE WITH THE SEPARATED DETECTORS DEPENDING FROM SAID CARRIER BARS FOR SWINGING THE SEPARATED DETECTORS MOVING ON THE FIRST BAR IN OPPOSITE DIRECTION TO THE SEPARATED DETECTORS MOVING ON THE SECOND BAR AND INTERSPERSING THE DETECTORS MOVING ON THE FIRST BAR BETWEEN THE DETECTORS MOVING ON THE SECOND BAR FOR ALIGNING SAID LOWER APERTURES.