In line eyepice video optics with zoom capability for physical resizing of the image and adjustment screws for optically centering the image. works for 16mm and 35mm arri cameras.
These retailed for about 2000 bucks when new.
Optimized for sony 1/2 " camera C mount, xc 77 etc.
asing 400.00 USD
fits all classic ' black body ' arri eyepieces BL 1,2,3,4,4s. arri 3, 2c, SR 16, 16-2, SR HS, with adapter ( not shown) SR3.