TT-B-1325C, FEDERAL SPECIFICATION: BEADS (GLASS SPHERES) RETRO-REFLECTIVE (01-JUN-1993)
TT-B-1325C, FEDERAL SPECIFICATION: BEADS (GLASS SPHERES) RETRO-REFLECTIVE (01-JUN-1993)., This specification covers two types of retroreflective beads used to reflectorize traffic and airfield marking paints.