縮圖器;電杆架
Pantograph \Pan"to*graph\, n. [Panto- + -graph: cf. F. pantographe.] An instrument for copying plans, maps, and other drawings, on the same, or on a reduced or an enlarged, scale. [Written also {pantagraph}, and incorrectly {pentagraph}.]
pantograph n : mechanical device used to copy a figure or plan on a different scale