PrismMaster® 300 HR MAX - High precision Goniometer for Large Samples

The TRIOPTICS PrismMaster series has been setting the standard for high precision goniometers since 1998. The  PrismMaster® 300 HR MAX is a fully automated, high precision prism goniometer with motorized z-stage that has been developed for the measurement of large samples with a diameter of up to 420mm.

The new PrismMaster® series boasts a number of new features including a new user-friendly software packed with many new functions. The overall concept of the new PrismMaster® series follows a simple philosophy: providing an instrument with unrivalled accuracy which is  also easy to use.

Key Features

  • Outstanding absolute accuracy achieved in a single measurement.
    Benefit: Saves time as no multiple measurements are required.
  • High precision electronic autocollimator with large measuring range and optimized light intensity combined with a high resolution camera.
    Benefit: Facilitates operation and allows the measurement of a large variety of samples
  • Software-automated sample tilt compensation (emulated tilt table).
    Benefit: Quick and precise measurement of prism angles and pyramidal errors without laborious adjustments.
  • Transmission measurements and refractive index calculations performed by the software.
    Benefit: No additional equipment - thus easy to operate and time-saving as no modification required.
  • Ultra-stable and accurate rotary air bearing with axial/radial run-out of less than 50 nm and high performance angular encoder.
    Benefit: Highest measurement accuracy.
  • motorized z-stage


  • Measurement of large samples
  • Angle measurements of polygons, prisms and wedges
  • Surface tilt errors of prism and polygons
  • Wedge errors, parallelism of optical windows
  • Deflection angle measured in transmission
  • Index of refraction of optical glasses
  • Angles of microprisms
  • Pyramidal errors
  • Angular gauge block