O-A-549A, FEDERAL SPECIFICATION: ANTI-FOGGING COMPOUND (03-MAR-1973) [NO S/S DOCUMENT]

O-A-549A, FEDERAL SPECIFICATION: ANTI-FOGGING COMPOUND (03-MAR-1973) [NO S/S DOCUMENT]., This compound covered in this specification shall be of one grade, and is intended to prevent fogging on all transparent or reflective surfaces.