Ignoramus15297 wrote in
:

What I have in mind is a device that is like an arm, with several
joints with balls in them. One could turn it any way they want and
then tighten screws on these balls so that the device stays in the
chosen position. A remotely similar device would be a gooseneck lamp.

What would such things be called?

thanks

Flexbar has something like that. They call the universal positioners.

http://www.flexbar.com/PDF/239.pdf

Home page.

http://www.flexbar.com/index.htm


--

Dan