This adaptation comes courtesy of several parents that wanted to give their 'child' access to their most treasured devices, iPhone/smartphone, and iPad/tablet. They liked my positioning Arms but they wanted more! So they asked, and I delivered! This is a nice sturdy attachment for my Mini-Arm (if 13" is long enough) or my Magic Arm (up to 22"). I use my quick-connect system so it's easy on/easy off for the devices, just one push of a lever by a facilitator (not the user). And I've also made the quick-connects so they can rotate but remain firm in place.
As with all my Adjustable Tablet Holders (ATH) or Phone Holder, they adjust to devices *in their cases* and for different sized devices, even the 12.9" iPad Pro!
Mini-Arm, Small Switch pictured are not included
"It is both a privilege and a pleasure to make something that exactly fulfills *your* requests, and to make it available to all!" (RJ :-)