This mirror was removed from a SPEX Czerney-Turner monochromator. It is believed to have a focal length of meter. The mirror diameter is 125mm and is held on an aluminum bracket with adjustments for both collimation angle and to a limited extent, focus.

Dimensions of the baseplate are 180mm wide by 85mm deep. The front mirror surface is approximately 42mm in front of the leading edge of the base. The optic axis is approximately 2.75 inches from the base.

The mirror is aluminum coated, and appears to be free of blemishes.

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