• Swiss Manufacture of Precision Components


    Formerly a section of The Sarcem Group known as Sarcem Avionics, LEMANS AVIONICS, became a separate company in 1992. Located in Geneva Switzerland, LEMANS has been in the forefront in the manufacturing of precision components for the aviation industry. Throughout history in the development, manufacturing and supply of repair parts, LEMANS AVIONICS has continued the high Swiss standard of quality, including achieving ISO 9001 certification in 1997 renewed in 2013.
    LEMANS expansion of capabilities was further enhanced with the acquisition of the MPW manufacturing company. This new division named, MecaProtoSwiss, also located in Geneva, is uniquely capable of manufacturing micro precision components in small to medium quantities covering prototypes and production series.


    capabilities over the years

    3" altimetric counter

    A Heritage of Innovation



    LEMANS AVIONICS has specialized in the development and manufacture of precision metal components for the Aviation Industry for over 40 years now. High precision components are manufactured for integration into mechanical altimetric and barometric counters, with calibrations in IN-HG or Millibars. Our counters are supplied in custom designed sizes, or in 2" or 3" standard sizes, meeting all aviation standards.


    The acquisition of MPW, founded in 1965, complements the precision and high quality capabilities of LEMANS manufacturing facilities. Mechanical precision components are process controlled by highly trained technicians with assemblies completed in clean room facilities.

    cnc milling machine

    Design and Manufacturing



    Our R&D Team has a long tradition in collaborating with customers in creating prototypes of specialized components. Solid model CAD/CAM systems are used to bring engineered prototypes to manufacturing reality, using CNC and microscopic quality control techniques.


    MecaProtoSwiss manufacturing capabilities have evolved over decades. Investments in CNC machinery, along with highly trained personnel, provide continuous improvements for the most advanced components required in today's industries.

    We have excellent capability for prototypes, tooling and small to medium production volumes of precision components in both metal and composite materials.




    Expand our established aerospace capabilities into the research, medical and watch manufacturing industries, while continuing to grow our precision counter activities. This to be accomplished through continuous innovation, cost awareness, component assembly and attention to detail.


    Being a Swiss company we are conscious of the tradition expected in high quality and precision associated with Swiss suppliers. Many of our employees are former engineers or technicians from major watch makers.


    New frontiers for LEMANS include Watch and MedTech applications, Science Research prototyping and supply and any application of micro fine precision manufactured components.

  • Expand our established aerospace capabilities into the research, medical and watch manufacturing industries


    Our clients trust is the best recognition of our overall capability !

  • Revue Thommen AG
    Elbit Systems
    SAAB Defence & Security
    AOA Gauting GmbH
    Sabena Technics
    CARP Industries Corp.
    Selex Galileo
    Blandenier SA
    Thales Avionics
    Meggitt PLC
    Tokyo Aircraft Instruments
    Pattonair SAS
    Netjets Europe
    Hexagon Metrology
    CERN Geneva

    our Geneva offices


    Lect Street 29

    P.O. Box 371

    CH-1217 Meyrin 1

    GENEVA / Switzerland


    Tel : +41 (0) 22 980 92 95





    Avionics Department

    @ : info@leman-avionics.com


    MecaProtoSwiss Department

    @ : info@leman-avionics.com


    A Company of DIVISA group


    LEMANS is located in the Lake Geneva region close to the international airport.

  • ISO9001 Certified
    Member of the GRPM
    Swiss Made

    Swiss Made


    Member of the CCIG
    Member of the OPI