Gurley Precision Instruments Inc.

At Gurley Precision Instruments, we have taken Optographics from its infancy to the continuously expanding state-of-the-art that we have today. Some of our more standardized Optographic products include: Reticles, Resolution Targets (including USAF & Sayce), Gratings, Step Wedges, Optical Rulers Field Finders, Rapid Comparators, Encoder Discs & Scales, Apertures and Grids.

In addition to our Optographics capabilities, Gurley now offers a wide variety of high quality optical materials, optical components, prototype and sample quality, at quantity and prices that are second to none. GPI has the ability to supply standard, precision and custom designed components that may be fabricated from fused silica, crystal quartz, optical crystals, acrylic and metal. With over 50 years' experience in the optical industry, GPI has the knowledge, dedication and service you need to get the job done.

Gurley Precision Instruments offers U.S. made standard and custom coatings at overseas prices. Our coating chambers and expert staff provide a variety of custom coatings to meet your specifications for Visible and Near IR applications. We specialize in offering custom designed coatings on our substrate or yours.

               

Gurley offers three technologies for rotary encoders: incremental, true absolute and our patented Virtual Absolute^TM brand.

Linear Encoders are generally available in two types, absolute and incremental, and are defined by their position signals. Absolute linear encoders create a unique position signal that is available anywhere along travel with the exact position being read after power cycling. Incremental encoders do not generate a unique signal and is zeroed after power-down. They rely on another switch or encoder for initial reference.