Last updated on April 16, 2014 at 21:24 EDT
Curiosity Robotic Arm
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Curiosity Robotic Arm

March 28, 2013
Curiosity's Robotic Arm This engineering drawing shows the location of the arm on NASA's Curiosity rover, in addition to the arm's turret, which holds two instruments and three tools. The arm places and holds turret-mounted tools on rock and soil targets. It also manipulates the sample-processing mechanisms on the 66-pound (30-kilogram) turret. The arm has five degrees of freedom of movement provided by rotary actuators known as the shoulder azimuth joint, shoulder elevation joint, elbow joint, wrist joint and turret joint. Image credit: NASA/JPL-Caltech