18 Rue de Besançon
Phone +33 3 81 68 27 27
Fax +33 3 81 68 68 34
Production area : 3000 m2
Turnover : 7.7 M€
Number of employees : 55

Located in Charquemont, a border village in eastern France.
RUBIS-PRÉCIS was founded in 1948. The company has expertise in the field of high-precision components and high-tech materials developed from a long tradition of micromechanics and watchmaking.
Its original purpose was the manufacture of ruby bearings for the watchmaking industry. Over the past twenty years, Rubis-Précis has diversified into a range of precision components made from state-of-the-art materials, based on customer requirements.


  • The turning of high precision parts.
  • Mechanical machining of precious metals and alloys.
  • Assemblies mounted by Collage, Driving in, Crimping, Press Fitting, Brazing and Laser Welding.
  • Very high precision machining of ruby, sapphire, and tungsten carbide.

Machined materials

Matériaux durs

  • Sapphire, Ruby
  • Macor, Zircon, Alumina
  • Tungsten carbide

Métaux et alliages

  • Brass, Bronze, Titanium
  • Silver, Gold, Platinum
  • Tungsten, Molybdenum, Niobium, Tantalum
  • Stainless steels, magnesium

Machining capacity

Bar turning

  • 0.5 to 42 mm on average and large series
  • Up to 160 in prototyping and small series


  • 650x520x475


  • Mounted sets for medium and large series: probes (ruby balls, sapphire balls, soldered carbide balls), nozzles, ducts.
  • Mechanical machining: grinding, boring, milling, drilling, turning, tapping, threading on various grades of stainless steel (303-304-316L), brass, nickel, silver, bronze.
  • Micro-assemblies of different components by gluing, driving, crimping, welding
  • Laser welding, brazing, and sintering.
  • Bar turning
  • Surface treatment
  • Machining on transfer machine.

Business areas

  • Metal ceramic by driving, crimping, laser brazing and gluing
  • The luxury industry: leather goods and jewellery
  • Instrumentation and equipment of all kinds
  • The medical field
  • Micromechanics, micro-hydraulics
  • optical and fibre-optical
  • Eyewear
  • Scientific machines, analysis, research centres
  • Aeronautics and aerospace