This 15 mm viewfinder adapter can be mounted on either side of the Vocas top handgrips (0350-1400 , 0350-1405 and 0600-0400) and allows the use of 15 mm based viewfinder systems. This adapter is designed to hold a horizontal 15 mm bar, to which a 15 mm NATO rail can be attached, to mount any viewfinder, monitor or recorder. Furthermore, by using this viewfinder adapter, other 15 mm rail accessories, like the mic holder (0350-1460) or cold shoe adapter (0350-1462) can be mounted properly on top of the camera.