Light transmission in a vehicle may be controlled using a system that includes a linear polarizing means and an ellipticity increaser associated with a display in the vehicle. The controlled delivery system of the present invention is a solid, substantially spherical particle comprising hydrophobic cationic charge enhancing agents in conjunction with cationic fabric softening agents that assist in adhering the particles onto fabric. The first filter is coupled to the second terminal. Intermediate gear transmits rotation of rotor to worm. The user can thus use the writing material for a long time. Furthermore, disclosed is the provision of a method for producing an impedance controlled printed circuit wiring board.