Renishaw plc
Table of Contents

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Summary

Renishaw plc is a British precision engineering company, headquartered near Wotton-under-Edge, England, founded in 1973 by Sir David McMurtry and John Deer around a patented touch-trigger probe for coordinate-measuring machines. Its product portfolio has since expanded into optical and magnetic position encoders (including for robotics), CNC machine tool calibration, additive manufacturing machines, dental CAD/CAM, and medical devices for neurosurgery. Renishaw also holds a 50% ownership stake in Slovenia-based magnetic encoder specialist RLS.

Key Facts

  • Founded: 1973, by Sir David McMurtry and John Deer; company floated on London’s Unlisted Securities Market in 1983 and gained a full London Stock Exchange listing in November 1984
  • Type: Public company — precision metrology, encoder, and additive manufacturing equipment maker
  • Status: Active, publicly traded (LSE: RSW, FTSE 250 constituent)
  • Key metric(s): FY2025 (year ended June 30, 2025) revenue of £713.0 million, operating income £112.3 million, net income £83.8 million, 5,339 employees (per Wikipedia, citing Renishaw’s FY2025 results)
  • Value chain position: Component/subsystem supplier (encoders for robotics, machine tools, and other precision-motion applications) and separately a machine tool/metrology equipment OEM — a broader-scope company than a pure robotics-encoder vendor

What It Is / How It Works

Renishaw’s encoder product line for robotics spans optical (ATOM™ miniature incremental encoders) and magnetic (AksIM™ off-axis absolute encoders, Orbis™ through-hole encoders, RM08 miniature encoders, LinACE™ cylindrical linear encoders) technologies, marketed across use cases including wafer-handling robots in semiconductor fabrication, microelectronics assembly, pick-and-place robotics, high-speed packaging, and surgical robotics. Renishaw’s own published case studies describe magnetic encoders (AksIM, Orbis) integrated into the knee, wrist, and elbow joints of PAL Robotics’ humanoid balance-control robot, and miniature encoders used in Marsi Bionics exoskeletons, where minimizing weight and volume without compromising reliability was the central design constraint — a direct echo of the space/weight trade-offs found throughout drone component subsystems covered elsewhere in this research area.

Renishaw’s origins are in an unrelated but foundational precision-metrology invention: founder Sir David McMurtry, while working to measure fuel pipes on a prototype jet engine, found existing coordinate-measuring machine touch probes too imprecise for delicate components and invented a spring-loaded kinematic touch-trigger probe, which he patented — the seed product for the company’s later diversification into encoders, CNC calibration, additive manufacturing, and medical devices. Distinct from its own directly-branded encoder lines, Renishaw holds a 50% ownership stake in RLS (Komenda, Slovenia), a magnetic encoder specialist, and sells RLS-designed encoders through its global sales and applications-engineering network — meaning “Renishaw” and “RLS” branded magnetic encoders can, for some product lines, trace back to shared design and manufacturing roots.

Notable Developments

  • 2025 (FY, ended 2025-06-30): Renishaw reports FY2025 revenue of £713.0 million and net income of £83.8 million (per company results cited on Wikipedia).
  • 2021-07-07: Renishaw’s board terminates a formal sale process for the entire company (launched March 2021 after founders McMurtry and Deer, holding roughly 53% of shares, indicated a wish to divest), concluding no proposal met their objectives.
  • 2015 (approx., per Wikipedia citation dated July 2015): Renishaw opens a research facility in Ljubljana, Slovenia — geographically coincident with its RLS ownership relationship, though the two are described in sourcing as separate facilities/entities.
  • 2011: Renishaw purchases a 400,000 sq ft former Bosch manufacturing plant in Miskin, Wales.
  • 1984-11: Renishaw gains a full London Stock Exchange listing, having floated on the Unlisted Securities Market the prior year (1983).
  • 1973: Renishaw founded by Sir David McMurtry and John Deer following McMurtry’s invention of a patented kinematic touch-trigger probe for coordinate-measuring machines.

Key People / Key Organizations

  • Sir David McMurtry — Co-founder, Renishaw (1973); inventor of the company’s original touch-trigger probe. LinkedIn: not found.
  • John Deer — Co-founder, Renishaw (1973); Deputy Chairman as of the most recent source reviewed. LinkedIn: not found.
  • Will Lee — Chief Executive, Renishaw (per Wikipedia’s most recent listed leadership, as of this review). LinkedIn: not found.

People — Last Reviewed: 2026-07-15

Sources

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