A1 Quick Release 1/4-20 Screw
A2 1/4 Thumbscrew
A3 3/8 Thumbscrew
A4 Bubble Level (uses 2 bubbles)
A5 Thumb Lever (not a stock item)
A6 Top Plate Assembly (not a stock item)
A7 QR Safety Pin
A8 Thumbscrew Pivot and Nut
B1 Main Casting (not a stock item)
B3 Ball (not a stock item)
B8 Base (not a stock item)
C Pan Rotation Lock Knob
D Ball Control Lock Knob
E1 Pan Tension Knob
E2 Pan Tension Shaft (not a stock item)