Loc-Line support arm is used here with the 'Mouse On A Stick' for easy positioning to users' needs, by clamping onto desktop. See other album here for more info on the 'Mouse On A Stick'. This is not a commercial enterprize, but rather a shared idea, for interested parties, that may want an arm to be built for them or, to build such a device themselves, for this purpose, or any other, see following pictures in this album for specific intormation on building this device. [MouseOnAStickInfo@gmail.com]