Ideal for 16 and 35mm film cameras, the Sachtler STUDIO 9+9 Fluid Head with 150 mm Ball Base, features Sachtler's unique, patented damping system that has been significantly extended. As the name indicates, there are now nine levels of extra-powerful drag on the pan and tilt as well as a zero setting for no drag. Drag levels 2 to 7 feature fairly fine gradations, while the jump from levels 7 to 9 is much greater. Its 18-step counterbalance allows adjustments via dial, in 9 stages and fine tune by half step function, and can be activated and deactivated individually.
The fluid head also boasts a new sliding plate, which has an integrated spindle drive. Centering the camera weight is now fast and easy - just slide the plate quickly into place and fine tune with the spindle drive if required. The counterbalance system combines the renowned Sachtler system with a dial knob system, compensating perfectly for any load from 18 lb to 121 lb.
In addition, viewfinder extension and front box connections are standard features of this head.
https://www.bhphotovideo.com/c/product/139144-REG/Sachtler_6002_STUDIO_9_9_Fluid_Head.html