Brunson 284-1 Cube Mirror

Description

This is a used Brunson 284-1 Cube Mirror in it's original wooden case.  It has a 2" cube with 5 mirrored faces that are mutually orthogonal with 2 arcseconds.  The top face and two opposite vertical sides include a filar target.  The base has both tilt and displacement capability for precise placement on spindle centerlines.  This cube mirror is designed to work as a spindle target or a corner reference for turning right angles.
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