Used on weapon systems-spruance class dd (963); blue ridge class lcc-19; wasp class lhd; mine countermeasures support (mcs) class (lph-12); iwo jima class lph; an/sps-40e radar; tarawa class lha; austin ship class lpd-4 amphibious transport docks; whidbey island class lsd; radar, search, an/sps-40. 1.450" overall length 1.200" overall width weapon system essential