General capabilities include:

  • Precision master generation, both linear and rotary.

  • Substrate fabrication including shaping, drilling and grinding & polishing of glass, and cutting and hole punching of film.

  • High vacuum deposition of coatings.

  • Pattern replication from prototypes to high volume on flat, curved, or odd shaped surfaces.

  • Image contrast control and multiple image registration.

  • Assembly, including bonding of encoder discs to hubs and reticle, or scale mounting in holders.

  • Inspection to MIL-I-45208 specifications.


Patterns vary from simple cross hairs and standard resolution targets to sophisticated sighting reticles and registration patterns for commercial, military or aerospace applications.

Other than chrome, we vacuum deposit many other metals for reproducing patterns including nichrome, aluminum, silver, copper, inconel, titanium and gold.

Substrate material is quite varied due to transmission requirements, coefficient of expansion, and other exotic demands.  Besides soda-lime float glass, we use borosilicate crown glass, quartz, fused silica, zinc sulfide, zinc selenide, calcium fluoride, germanium, lithium niobate and sapphire to name a few.

Our vacuum coating area can apply special coatings such as magnesium fluoride, silicon monoxide, cerium fluoride and zinc sulfide for their anti-reflective properties, or for their ability to protect less durable coatings like aluminum, silver and gold.

Our years of experience and creative engineering staff give us the ability to tackle your most challenging optographic problems with a degree of success unequaled in the industry.

Your Disc and Scale Assembly Specialists

The quality, performance, and most importantly cost, of our discs and scales can help make your products more competitive. We currently supply these products to several international companies, including the semiconductor and instrumentation manufacturing industries.

Some of the benefits we can provide include:

  • lower material and labor costs

  • lower inventory levels

  • just-in-time (JIT) delivery

General Technical Specification for Gurley Discs and Scales:

General Technical Specification for Gurley Discs and Scales.png

Other technical characteristics are available. Please contact us for more information.