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
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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]










Precision balls made to AFBMA Specifications.

Standard sizes available in English and Metric.


  • Ruby / Sapphire, Spinel, Rutile, Silicon, Cubic Zirconia and other crystal materials.
  • Ceramic:  Aluminum Oxide, Zirconium Oxide, Silicon Nitride, Silicon Carbide and others.
  • Carbide:  Tungsten Carbide, Titanium Carbide
  • Glass & Quartz:  Optical Glasses, Fused and Natural Quartz.

Precision Optical Spheres For All Fiber Optic SystemsCeramic Spheres
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Made to customer’s specifications from DIA .005" (0.127mm) upward. - Glass balls: Different colors available.

Secondary operations: Drilling, Flats, Cylindrical.

Spherical Lenses for all Fiber Optic Systems, mounted or unmounted, AR Coating available.

Please contact us regarding your special applications and needs. Engineering assistance available.

(click images for larger versions)

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