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55281A Angular Optics Kit

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Prices for: United States

* Prices are subject to change without notice. Prices shown are Manufacturer's Suggested Retail Prices (MSRP). Prices shown are exclusive of taxes.

Key Features & Specifications

  • Helps eliminate additional linear measurements
  • Alignment target (included) simplifies setup
  • 11 mm (0.43 in) beam separation
  • High 0.006 arc sec resolution
  • Range of up to ±36000 arc sec (±10°)


The Keysight 55281A Angular Optics Kit adds pitch and yaw measurement capability to the 5530 Laser Calibration System. Ideal for use in precision calibration applications, it includes the 10770A Angular Interferometer and the 10771A Angular Reflector. Together the high-accuracy plane mirror interferometer and the angular reflector measure pitch and yaw motions along each axis that a machine tool or measuring machine travels. Results are displayed directly in arc-seconds or in mm/mm (in/in).

As part of the 5530 system, the optics kit can help quickly locate and evaluate unwanted angular motion. Used as a powerful diagnostic tool, the 55281A helps find the causes of linear positioning errors -- information that is critical in making replace or rebuild decisions for older machine tools. Used in the metrology laboratory, the 5530 system calibrates precision equipment, including rotary devices, autocollimators, and electronic levels.