11. Another type of needle threader is mechanically operated . 12. In 2013 a specific certification was created to improve the standard of mechanically operated airbag vests. 13. During the intake stroke, fresh air is inducted into the cylinder through a mechanically operated intake valve. 14. The wing flaps are mechanically operated from a lever located on the left side of each cockpit. 15. The flaps are two-position and mechanically operated by a flap handle on the cabin floor between the seats. 16. Signals or points located some distance away from the signal box are sometimes electrically rather than mechanically operated . 17. A mechanically operated bellows injects a jet of air into the first chamber where ignition will take place. 18. A 30-foot Christmas tree rotated in place, to the admiration of the mechanically operated Barney, Winnie-the-Pooh and Bart Simpson. 19. The hand brake is mechanically operated and includes a separate drum brake behind the gear box, affecting on transmission. 20. Fishing rod or tackle is mechanically operated by one man using a reel fixed on a springy plastic rod.