MIL-G-20098C, MILITARY SPECIFICATION: GYPSUM, CALCINED (31-JAN-1969)

MIL-G-20098C, MILITARY SPECIFICATION: GYPSUM, CALCINED (31-JAN-1969)., This specification covers calcined gypsum (calcium sulfate hemihydrate). Calcined gypsum is used in the manufacture and assembly of level vials for fire control equipment, also as an ingredient in fillers used in inert ammunition.