so that the on position is reached by an upward or forward  movement of the toggle. When the switch controls movable  aircraft elements, such as landing gear or flaps, the toggle  should move in the same direction as the desired motion.  Inadvertent operation of a switch can be prevented by  mounting a suitable guard over the switch.  [Figure 9-165] momentary contacts actuate the circuit temporarily, and they  return to the normal  position with an internal spring when  the switch is released. Switches with continuous contacts  remain in position when activated. Hazardous errors in  switch operation can be avoided by logical and consistent  installation. Two-pos ition on/off switches should be mounted  Figure 9-164.  Coaxial cable connectors.  Plug Straight receptacle Flange mount receptacle Plug Straight receptacle Flange mount receptacle Plug Straight receptacle Flange mount receptacle Plug Straight receptacle Flange mount receptacle BNC series connectors TNC series connectors N series connectors C series connectors 9-97