Gurley Precision Instruments

514 Fulton St.
Troy,  NY  12181

United States
  • Booth: 1945

Gurley Precision Instruments (GPI) is a world leader in the manufacturing of Optical Encoders for precision position & speed feedback in the semiconductor industry. Our encoder designs are currently used on some of world's largest commercial semiconductor wafer handling robots. We offer enclosed & modular encoders with resolutions up to 24-bits, accuracies down in the single-digit arcsec levels, spread over various platforms (from 8mm to over 12 inches in diameter).

GPI also offers a full line of Optics & Optographics components, specializing in the generation & replication of precision optical patterns & parts such as reticles, resolution targets, encoder discs & scales, prisms, mirrors, beam splitters, filters, lenses & step wedges. The patterns are commonly vacuum deposited chrome on glass. We also work with other materials such as silver, inconel, aluminum, and photographic emulsion. 


  • 7700 Miniature Virtual Absolute Encoder System
    The model 7700 Incremental & Virtual Absolute encoder is a compact, non-contact modular system with superior performance....

  • Available in many resolutions and configurations, it is easy to install and its optional commutation tracks eliminate hall effect sensors for brushless motors.

    Features common to both models include:
    · -40C to +100C operating temperature
    · Low power consumption
    · Single phased-array optoelectronic ASIC
    · LED illumination for long service life (>100,000 hours)

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