On the last couple of shows it has become very common to use two 703 Bolts for a small director's monitor rig, showing A and B camera. The rigs that rental houses have or other assistants have come up with have tended to be bulky, heavy, floppy, or a combination of the three.
With the help of my first assistant on the last show we set out to build a better system. Using cinelocks (not included, I recommend Kondor Blue ones for this mount) and the smallHD side handles, this rig allows very easy access of the set of two or just pulling one camera off. It is designed to be as light and slim as possible while still being very rigid. We used it with success on the last 6 month show and had nothing but good experiences.
The device is designed with two 3/8-16 threaded holes on either end, spaced for the 703 to be almost touching in the middle. These have arri pins drilled for locating. The center is drilled and counterbored to allow a flush 3/8 screw to go through and mount an additional cinelock (also arri pined).
This is all put onto a baby stand using any 3/8 to baby pin adaptor.
It is a great system for this specific application and may be transferable to other applications. Please feel free to ask me any questions.
This only works with the 703 Bolts. Please see the long top 703 adaptor for use with non-Bolt 703s.
Comes with bottom piece, top spar, and two captive 1/4-20 thumb screws. No cinelocks included.