bakelite; o/a 2.125 in. lg 0.594 in. w 1.719 in. h in open pos; irregular shape; 2 ea 0.188 in. dia mtg holes ON1.813 in. mtg ctrs; feat 2 pos hing action; for spec if use ord bx assy p/n 8706421; used as guard for elec switch; fsc appl turret type cal .50 aa mach gun installation mt bx assy switch