pantograph
pan·to·graph / ˈpantəˌgraf/ • n. 1. an instrument for copying a drawing or plan on a different scale by a system of hinged and jointed rods.2. a jointed framework conveying a current to a train, streetcar, or other electric vehicle from overhead wires.DERIVATIVES: pan·to·graph·ic / ˌpantəˈgrafik/ adj.
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ball-and-socket joint
ball-and-socket joint
ball-and-socket joint, in engineering, mechanical connection used between parts that… Joint (geology) , joint
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pantograph