Induro 483-003 3D-L-34 3-Way Panhead (Black) Graduated Angle Scale see and set the position of your tilts and pans Integrated Bubble Level allows adjustment to prevent uneven pans and tripod head movements Snap-in Quick Release Plate interchangeable QR system assures effortless and rapid camera changes Dual Locking Quick Release System patented spring lock combined with manual release provide extra security Separate Pan Knob independent pan and lock control