Jasper Engineering "toe-in" twin vertical mounts  type_Radio Remote high-quality flash with a tilt/swivel

high-quality flash with a tilt/swivel head and full manual or TTL control

Adaptall lenses have interchangeable mounts

swiveling shoe mounts

Here's one

A very high-speed black and white film with an effective ISO of 3200

Jasper Engineering "toe-in" twin vertical mounts &nbsptype_Radio Remote high-quality flash with a tilt/swivelDesigned for stereography, this twin bracket system includes two vertical mounts with fixed 1 4" threads for camera mounting. This "toe in" bracket allows the cameras to be shot straight ahead or tilted inwards to better results with close up subjects. Made by Jasper Engineering of Mountain View, California.