The Viewfinder Bracket from Alphatron Broadcast Electronics is an articulating mounting bracket for Alphatron's EVF-035W-3G Electronic Viewfinder.
It clamps onto 15mm rods from either side and provides three points of adjustability. The EVF support rod, a 7.1" long (18 cm) 15mm rod, moves up/down, forward/backward, and slides aside 1.4" (3.5 cm) away from the camera. It slides out at the loosening of the top section of the rod clamp.
Lightweight aerospace aluminum construction
EVF mounting rod diameter and length: 15 mm diameter, 7.1" (18 cm) length