This is a special ocular manufactured by Kyowa for use with their TES-2 measuring microscope. It includes a focusable eyelens and a very precisely centered crossline. The crossline is perfectly centered to the sleeve of the ocular.

The sleeve is a standard 23.2mm diameter, and the magnification is 10x. I am not sure what the actual field-of-view index is, but the ocular is marked WF for wide field.

Lenses are coated, and the glass is well-corrected (the entire crossline is perfectly imaged by the eyelens). The ocular appears to have had very little use.

Photo set 1313

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