Straight line drawing mechanism 4b

Yellow, green and pink links create a parallelogram mechanism. Length of yellow link: a + a Length of pink link: a + 2a Length of green link: 3,4a Length of blue links: 3.25a Center distance of two fixed revolute joints: 2.75a Center of revolute joint between two blue links traces a curve, a portion of which is approximately straight (in green).

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• #straight_line
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