Package for filter holder and the like

Claim 1

THE COMBINATION OF A FILTER HOLDER INCLUDING TWO ANNULAR PARTS HAVING CYLINDRICAL EXTENSIONS WITH COOPERATING EXTERNAL AND INTERNAL THREADS FOR RELEASABLY SECURING SAID PARTS TO EACH OTHER; AND A PACKAGE FOR SAID FILTER HOLDER COMPRISING A FIRST WALL HAVING A CIRCULAR OPENING THEREIN DIMENSIONED TO RECEIVE SAID EXTENSION WITH EXTERNAL THREADS SO THAT, WHEN SAID EXTENSION WITH INTERNAL THREADS IS SCREWED ON SAID EXTERNAL THREADS, SAID FILTER HOLDER IS RETAINED IN SAID OPENING, A REAR WALL SUBSTANTIALLY COEXTENSIVE WITH SAID FIRST WALL, MEANS HINGEDLY CONNECTING SAID FIRST AND REAR WALLS TO EACH OTHER ALONG ONE OF THEIR ADJACENT EDGES SO THAT SAID REAR WALL CAN MOVE BETWEEN A NORMAL POSITION IN BACK OF SAID FILTER HOLDER AND AN EXTENDED POSITION EXPOSING THE BACK OF SAID FILTER HOLDER FOR TRIAL FITTING ON A CAMERA, RELEASABLE MEANS OPERATIVE TO HOLD SAID REAR WALL IN SAID NORMAL POSITION, AND A REORDER TAB REMOVABLY ATTACHED TO SAID REAR WALL ALONG A SIDE EDGE OF THE LATTER AND NORMALLY LYING IN FRONT OF SAID REAR WALL, SAID REAR WALL HAVING A SCALE ON THE SURFACE THEREOF NORMALLY FACING AWAY FROM SAID FIRST WALL AND WHICH IS CALIBRATED TO MEASURE THE SIDES OF A FILTER HOLDER TO BE FITTED ON A CAMERA.