Imetra, Inc., Precision Components for the Instrument Industry - custom engineering, tools, measurement tools, carbide, ceramics, alloy, crystal, balls, bearing, carbide, ceramic, glass balls, instrument balls, ruby balls, ruby, sapphire balls, sapphire, tungsten carbide balls, tungsten carbide, zirconium oxide, zirconium oxide balls, glass beads, agate bearings, carbide bearings, agate, glass,  industrial jewels, jewels, jewel bearings, brass, bronze, copper, bushings, coils, magnets, magnetic, miniature coils,  miniature, toroidal, transducer, industrial diamonds, tungsten carbide dies, drills, microscopic drills, ferrules, gages, gearheads, gears, guides, ceramic guides, thread guides, textile guides, wire guides, hairsprings, diamond inserts, lenses, infrared lenses, magnets, alnico magnets, ceramic magnets, ferrite magnets, permanent magnets, rare earth, rare earth magnets, mortars & pestles, mortar, pestle, clock, switch, phonograph needles, carbide nozzles, sapphire nozzles, water blasting nozzles, optical flats, optical goods, fiber optics, infrared optics, atomizer orifices, gas orifices, recording instrument pens, pens, pivots, molded plastics, pointers, prisms, rods, rollers, rubies, screw machine, scribers, diamond scribers, heat shields, styli, styluses, substrates, burnishing, check valves, valves, ball type, spring loaded,  stop valves, vials, spirit level vials, winding, windows
Product Lines

About Imetra
Product Lines
Industries Served
Contact Us

Imetra, Inc.
140A Metro Park
Suite 620
Rochester, NY 14623
Tel. (914) 592-2800
Fax: (914) 592-1637
[email protected]




With hardness second to diamond, (9 on the MOH Scale), high temperature resistance, chemical inertness and its wide range of optical transmission from the UV to the IR range it is the material of choice in many demanding applications.


Our machining and finishing capabilities offer you a wide range of geometries, combined with the capability to produce assemblies, press-fitted, bonded, swaged or other. Metalization and protective varnish available.


  • Prisms, Lenses, Windows
  • Bearings & Wear Parts
  • Balls & Second Operations
  • Pistons & Valves
  • Probes & Light Conductors
  • Knife Edges
  • Pivots & Shafts
  • LASER Rods
Sapphire Crystal StructuresMaterial CharacteristicsPistons and ShaftsCartridges
(click images for larger versions)

Please include the following specifications in your request for quotation:

  • Crystallographic Orientation
  • Flatness
  • Parallelism / Cylindricity
  • Surface Finish
  • Sphericity and/or Angular Tolerances
  • Optical: Transmission / Wavelength

We can assure you of first quality components produced at economical prices. Engineering assistance available.

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