pantograph

n 1 instrument used to draw an exact copy of a plan, map, etc on any scale 缩放仪; 比例绘图仪. 2 device for carrying an electric current from overhead wires to a train （电气列车顶上的）导电弓架.

pannikin, panoplied, panoply, panorama, panoramic, pansy, pant, pant(o)-, pantaloon, pantechnicon, pantheism, pantheist, pantheistic, pantheon, panther, panties, pantihose (also pantyhose), pantile, pantingly, panto, pantomime, pantry, pants, pap, papa, papacy, papal, papaw (also pawpaw), paper, paper money, paper-boy (fem 阴性作 `paper-girl), paper-chase, paper-clip, paper-knife, paper-mill, paperback, papercut, papercutting, papers, paperweight,