Film Plane Alignment Fixture 70mm Format with Microscope

Description

Film Plane Alignment Fixture 70mm Format with Microscope

This item appears to be some sort of film-plane calibration fixture. It consists of two assemblies. The larger assembly, marked 70MM-5C-26 has slotted sides on the base plate and a ground glass window 30mm by 70mm. The ground glass has a crossline with centering circle scribed upon it. There is a 45 degree mirror and another vertical glass plate to protect the mirror. When the instrument is fully assembled, it looks like there is a massive right-angle prism with a ground glass surface.

In front of the clear window is a sleeve mounting that accepts a right-angle viewing microscope. The microscope can be focused upon the ground-glass surface with the crossline, however the circle is not perfectly centered in the field of view.

There is no manufacturer’s mark on the fixture, and I was not able to find anything that referenced the part number. There is a small paper label fixed to the back of the reflector housing that is marked in red ‘TRAP 6″ and the numbers ‘130-020 A’.

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***MPN 70MM-5C-26
***OEM Custom
***SKU*** 20213