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Brunson 381-1 Compact Collimator Telescope Right Angle Eye Piece
Product Description
Brunson 381-1 Compact Collimator Telescope Right Angle Eye Piece. The Brunson Model 381, smaller than the model 81. Its nominal barrel diameter is 1 3/4". This unit is setup to take a fiber optic illuminator (can be ordered separately). The Auto-Reflection target is a paired-line type and is concentric to the line of sight within +/- .001 inch. Comes with Case (possibly not original).