A remote manipulator, also known as a telefactor, telemanipulator, or waldo (after the 1942 short story "Waldo" by Robert A. Heinlein which features a man who invents and uses such devices),^[1] is a device which, through electronic, hydraulic, or mechanical linkages, allows a hand-like mechanism to be controlled by a human operator. The purpose of such a device is usually to move or manipulate hazardous materials for reasons of safety, similar to the operation and play of a claw crane game.

In 1945, the company Central Research Laboratories^[2] was given the contract to develop a remote manipulator for the Argonne National Laboratory. The intent was to replace devices which manipulated highly radioactive materials from above a sealed chamber or hot cell, with a mechanism which operated through the side wall of the chamber, allowing a researcher to stand normally while working.

The result was the Master-Slave Manipulator Mk. 8, or MSM-8, which became the iconic remote manipulator^[3] seen in newsreels and movies, such as The Andromeda Strain or THX 1138.

Robert A. Heinlein claimed a much earlier origin for remote manipulators.^[4] He wrote that he got the idea for "waldos" after reading a 1918 article in Popular Mechanics about "a poor fellow afflicted with myasthenia gravis ... [who] devised complicated lever arrangements to enable him to use what little strength he had." An article in Science Robotics on robots, science fiction, and nuclear accidents^[5] discusses how the science fiction waldos are now a major type of real-world robots used in the nuclear industry.

• Glovebox
• Dextre
• Doctor Octopus
• Teleoperation
• Telerobotics
• Master/slave (technology)
• Avatar (computing)
• Pantograph
• Man-Machine

• Central Research Laboratories web site
• A video of a Remote Manipulator being used to make an origami crane [1]
• Master-slave manipulator at Argonne National Laboratory [2]
• Zeleny, Milan (2005). Human systems management: Integrating Knowledge, Management. World Scientific. p. 142. ISBN 981-02-4913-6.