NAVWEPS 00-EOT-80  STABILITY AND CONTROL  TRIM TAB  VARIABLE LINKAGE  LAGGING TAB  LEAOING TAB  SERVO TAB  HORN FREE TO  PIVOT ON HINGE 13X6  SPRING TAB  ON  HINGE AXIS  FIXED TO SURFACE  SPRING LLADED TAB  ROTATES TAB UP  Figure 4.18. Various Tab Devices  274 