USBA+TMAT - Sideways Tilting Quick Release Base
This version of the Quick Release Base is attached to a Tube Mount
by a collar that allows it to be rotated sideways. Additionally the Tube
Mount (TMAT) can be rotated around the Horizontal Tube. When these two
motions are combined the device can be tilted toward the user and then
sideways to suit a person with a viewing position tilted to the side.