https://knightglobal.com/products/arms/
Pneumatic, Extension, Vertical and Servo Articulating Arms Knight Global
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https://www.filmtools.com/cameradept/camera-accessories/articulating-arms-shoe-mounts.html
Articulating Arms & Shoe Mounts - Camera Accessories - Camera - Filmtools
Articulating arms and shoe mounts provide more versatility for your camera rig!
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https://lumi2007.en.made-in-china.com/product/PtApaMrbuLcu/China-Heavy-Duty-Steel-TV-Bracket-Full-Motion-Tilt-TV-Wall-Mount-with-Articulating-Dual-Arms-for-37-to-86-inch-Max-VESA-600x400.html
Heavy-Duty Steel TV Bracket Full-Motion Tilt TV Wall Mount with Articulating Dual Arms for 37 to 86...
Heavy-Duty Steel TV Bracket Full-Motion Tilt TV Wall Mount with Articulating Dual Arms for 37 to 86 inch Max. VESA 600x400, Find Details and Price about TV...