Optical incremental encoders designed for light industrial applications that require high resolution in a very small package. Either shafted or blind-hollow shaft version. LED illumination for long life (>100,000 hours). (read more)

Combination of low, standard and high pressure Gurley Densometers and smoothness testers

Our flagship instrument. The Model 4340 combines the abilities of our textile, standard and high pressure Densometers, S-P-S Testers as well as our programmable digital timers and provides a reading in seconds, thus reducing the time required to test a material.

By utilizing state-of-th... (read more)

Available in headphones or digital styles, the Price Type AA meters offer fast, accurate measurements for all but the lowest flows. The headphone Model generates one click every rotation or one every five rotations of the shaft, according to the contact connection selected. (read more)

Gurley Precision Instruments has been a major designer and manufacturer of precise measuring instruments since 1845, and a leading supplier of optical encoders since the mid-1950s. We have a full catalog of standard products; most of them are on our web site. Please call if you don't see what you're looking for.

Although we have many catalog items, our real strength has always bee... (read more)

The model 7700 Incremental and encoder is a compact, non-contact modular encoder with superior performance. Available in many resolutions and configurations, it is easy to install and its optional commutation tracks eliminate hall effect sensors for brushless motors.

Features common to both models include:

• LED illumination for long life (>100,000 hour...

The Model 4320 Programmable Digital Timer is designed specifically for all Gurley Densometers and High Pressure models. (read more)

The compact design of pygmy meters - the bucket wheel is just 3/4 inch by 2 inches in diameter - allows measurement of shallower and lower velocity flows. The pygmy meter provides reliable measurements of flows down to 0.05 feet per second at depths as shallow as 3 inches. (read more)

The most popular Densometer sold for measuring porosity and air permeability in materials of average values. With options such as smaller orifice plates, materials of lower permeability may be effectively tested. By using a 5 oz. cylinder, materials of a higher permeability can be tested (Model 4118). (read more)

The A08 magnetic absolute rotary encoder is designed for light industrial applications that require up to 12-bits of resolution in a very small package. (read more)

The Model 9710 is a versatile read head that can be configured for use with either a rotary disc or linear scale. Its modular construction provides friction-free operation, and the wide selection of disc sizes gives the design engineer great flexibility.

When used with the Model VA or other interpolating decoder, its optical resolution is electronically increased. Th... (read more)

Compact Magnetic Rotary Encoders from Gurley Precision.

The series M122 magnetic rotary encoders are designed for light industrial applications that require up to thirteen bits of resolution (8192 words or counts/turn) in a very small package.

The four models share these features:

• Shafted & non-contact, frictionless; bi-directional<.../li>

The Model A37H miniature encoder is a single-turn rotary absolute encoder with opto-electric technology that offers up to 23-bit serial output. (read more)

From UV to IR and everything in-between. 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. (read more)

The model A37 mini encoder is a 12-bit single-turn absolute rotary encoder with opto-electronic technology. These encoders are used in a wide variety of position-sensing applications for the measuring of angles and distances in relatively small envelopes. (read more)

The model A58 encoder is a single-turn absolute rotary encoder with opto-electronic technology. This encoder is used in a wide variety of position-sensing applications for the measuring of angles and distances. Mechanical features include a 58-mm aluminum housing (read more)

Optographics is the production of precision masters and the replication of these patterns in metallic depositions or photographic emulsions on various substrates. At Gurley Precision Instruments, we have taken Optographics from its infancy to the continuously expanding state of the art that we have today. (read more)

GENUINE GURLEY^TM Cobb Sizing Testers have been manufactured by Gurley for over a half-century and represent an economical and practical means of determining liquid absorptiveness or resilience of treated and untreated papers, boards, fabrics and other sheet materials. The complete kit consists of the Gurley-Cobb test apparatus, its 10-kg roller and a supply of blotting paper.... (read more)

The series A19 & A20 are miniature single-turn absolute rotary encoders with optical electronic technology. This encoder is used in a wide variety of position-sensing applications for the measuring of angles and distances in very small envelopes, where high resolution is required. (read more)

Gurley has expanded on its compact, modular encoder designed for superior performance. Based on Gurley's patented Virtual Absolute technology, the model 7700 provides absolute positioning and high performance at a low price. (read more)

In addition to our Optographics capabilities, Gurley offers a wide variety of high quality optical materials, optical components, prototype and sample quality, at quantity and prices that are second to none. Plano Convex, Plano Concave, Bi-Convex, Bi-Concave, Positive and Negative Meniscus, Achromatic Doublet & Triplet, Cylindrical, and Unique Camera Lenses (read more)

Since 1923, GENUINE GURLEY^TM film, sheet, tubing and paper-testing instruments have been the industry standards for measuring physical characteristics such as stiffness, flexibility, water absorption, softness, porosity, air-permeability and smoothness. (read more)

There are two basic types of rotary encoders: absolute and incremental. Absolute rotary encoders provide a coded angle information and avoid time consuming reference measurements or calculation routines in the controller. Incremental rotary encoders provide a square wave or sinusoid output signal and enable counters and PLC to calculate position, speed and distance. (read more)

Gurley offers a wide variety of high quality optical materials and optical components, at 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, acrylics and metals. With over 50 years experience in the optical industry, GPI (read more)

All Genuine Gurley^TM bending resistance/stiffness testers are based on the same physical principle. each instrument consists of a balanced pendulum or pointer which is center-pivoted and can be weighted at three points below its center. (read more)

The Series R176H is a family of optical incremental encoders designed for industrial-grade applications that require thru-hollow shafts, high resolution and high accuracy. (read more)

Miniature High-Resolution Encoder - The Models R119 and R120 optical incremental encoders are designed for light industrial applications that require high resolution in a very small package. (read more)

The model A19 encoder is a miniature single-turn absolute rotary encoder with opto/magnetic electronic technology. (read more)

The V860H is a high-performance optical encoder that utilizes virtual absolute technology to combine the opto-mechanical simplicity and ruggedness of an incremental encoder with the system reliability and interfacing ease of an absolute encoder. (read more)

The model 7700 Incremental and Virtual Absolute encoder is a compact, non-contact modular encoder with superior performance. Available in many resolutions and configurations, it is easy to install and its optional commutation tracks eliminate hall effect sensors for brushless motors. (read more)

The A58 is the highest resolution compact encoder available for applications requiring precise measurements of distances and angles in a relatively small package. The low cost and high accuracy of this encoder make it an ideal solution for practically all applications which require absolute positioning. (read more)

The Series 9480H is a robust metrology-grade encoder that is equally well-suited for industrial applications. It incorporates four reading heads to eliminate many common sources of encoder errors, while its stainless steel construction greatly enhances resistance to shock and vibration. (read more)

The Model A19 is the smallest true-absolute rotary encoder available with opto/magnetic electronic technology. With resolution of up to 18-bits (262,144 words/turn), this mini-encoder provides superior performance in a wide variety of position-sensing applications for the measuring of angles and distances in very small envelopes. (read more)

The Series 9480H is a robust metrology-grade encoder that is equally well-suited for industrial applications. It incorporates four reading heads to eliminate many common sources of encoder errors, while its stainless steel construction greatly enhances resistance to shock and vibration. (read more)