The lengths of the links comply with the conditions: C͞D=B͞E, H͞E=H͞D and E͞K=K͞D. Sliders 1 and 2 move along fixed guides p-p. When point A is traced around a plane figure, point K describes the same figure with the scale changed in the direction perpendicular to axis x-x. The scale change factor is τ=A͞a/K͞k=(A͞D+D͞C)/K͞C There is no change in scale in the direction of axis x-x. At τ=1/(sqrt(3)) conditions are complied with for an isometric projection.
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