parallelogram drafting machine

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Drafting machine — attached to a drawing board. A drafting machine is a very useful tool in technical drawing, consisting of a pair of scales mounted to form a right angle on an articulated protractor head that allows an angular rotation.[1] … Wikipedia
India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… … Universalium
Pantograph — A pantograph (from Greek roots παντ all, every and γραφ to write , from their original use for copying writing) is a mechanical linkage connected in a special manner based on parallelograms so that the movement of one specified point is an… … Wikipedia

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