What would you call this, in technical language?

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The discussion revolves around finding a technical description for a device resembling a double-jointed robotic arm. Participants suggest terms like "2DOF manipulator" and "double pendulum configuration" to better capture its mechanics. There is a consensus that the term "robotic" may be misleading due to the absence of actuators, with some favoring simpler descriptions like "joints & sticks." One proposed term is "a 2D representation of a multi-axis linear assembly," though it lacks clarity without visual context. Ultimately, the term "double-jointed arm" is favored for its straightforwardness.
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I'm an EE with a fried brain right now, how would you describe the device in the attached picture in technical language?

So far I've called it a "double-jointed robotic arm with one joint affixed to a mounting surface". That sounds really bad and not descriptive.
 

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2DOF manipulator. This is like a double pendulum configuration: two rotational joints connected in series. Maybe that will give some search terms to narrow down the conventional nomenclature.
 
I wouldn't involve the term "robotic" at all, since there are no actuator mechanisms. It's just a bunch of joints held together with sticks.
The best that I can currently think of is "a 2D representation of a multi-axis linear assembly". That, of course, makes no sense whatsoever unless accompanied by the illustration. (Personally, I'd go with the "joints & sticks" explanation... :-p)
 
I'd go with double-jointed arm.
 

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