MIL-PRF-32531, PERFORMANCE SPECIFICATION: FLUORESCENT PENETRANT INSPECTION (FPI) UNITS, SEPARATE MODULAR STATION TYPES (07-AUG-2015) [SUPERSEDING A-A-58050A]

MIL-PRF-32531, PERFORMANCE SPECIFICATION: FLUORESCENT PENETRANT INSPECTION (FPI) UNITS, SEPARATE MODULAR STATION TYPES (07-AUG-2015) [SUPERSEDING A-A-58050A]., This specification covers fluorescent penetrant inspection (FPI) units for nondestructive inspection/testing using the liquid penetrant method.