11. It was formed of a pair of trunnion bascule leaves which formed a one span Warren through truss. 12. The vehicle is fitted with an autonomous navigation and gun laying dynamic reference unit ( DRU ) mounted on the trunnion . 13. "' Thirty-pounder rifle "': these guns were iron with bronze trunnions and trunnion bands. 14. The rounded face, long radial arms and trunnion bearings allow it to close with less effort than a flat gate. 15. The booms deployed outward and forward of the lifting frame trunnion axis to prevent it toppling forward or to either side. 16. Production Mark VIII KTTs used a more conventional bronze bush and trunnion shaft pivot for the one-piece rear fork. 17. In full-size engines, the steam and exhaust ports are usually built into the pivot ( trunnion ) mounting. 18. The first production models had stamped sheet metal receivers with a milled trunnion and butt stock insert, and a stamped body. 19. To the U-shaped stamped sheet metal receiver housing a rear stock trunnion and forward barrel trunnion are fastened using rivets. 20. To the U-shaped stamped sheet metal receiver housing a rear stock trunnion and forward barrel trunnion are fastened using rivets.
