Visit us at booth #4155 Feb. 4th-6th 2020
The Moscone Center, San Francisco, California
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PLX Ceramic Ball Mounted Hollow RetroreflectorsTM (BMRNMs): Designed for applications involving non-magnetic components. They are lighter, smoother, corrosion and electrically resistant, with low thermal conductivity.



  • Low thermal conductivity.
  • Superior accuracy and performance.
  • If necessary, optical elements replaceable at modest cost.
  • PLX is a registered ISO 9001 company.

Ball Mounted Hollow Retroreflectors™ (BMRs)

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PLX non-magnetic BMRNMs are available in 2 centering accuracies, within .0005” and within .0001”, and are manufactured in 1½”, 7/8" and 1/2"diameters.

PLX guarantees their BMRNMs to provide superior performance and compatibility with laser tracking systems from all manufacturers.

Specification Chart
Model Ball Diameter
Retroreflector Clear Aperture
BMRNM-1.5 BMRNM-1.5 1.50 1 within .0001 - .0005 83
BMRNM-0.875 BMRNM-0.875 0.875 0.5 within .0001 - .0005 17.5
BMRNM-0.5 BMRNM-0.5 0.5 0.31 within .0001 - .0005 3.3

Ball Material: Ceramic with sphericity better than 0.00005".

Retroreflector Apex: positioned within either .0005" or .0001" of the center of the ball.

Retroreflector Mirror Coating: Protected silver.