WANTED: O. J. Childs Chemical Engine pressure gauge, 2 ½”in diameter and an O. J. Childs wrench to complete our chemical engine. Also in need of any O. J. Childs literature, adds, etc. showing their hand drawn equipment so we can restore ours to exact factory specifications. I also will be casting crank handles for Childs Chemical Tanks, so contact me, if needed. Thomas Herman, (804) 590-1239 or email: firstname.lastname@example.org for photos.