AI-TEK Instruments makes hundreds of types of speed sensors.  Three technologies are used; variable reluctance, magneto-resistive and Hall Effect to convert motion into an electronic signal.  In addition to the full range of speed sensors, we also offer electronic indicators and controllers as well as a full range of other accessories which are too numerous to include in this section of our On-Line catalog. 
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Alnor is the leading manufacturer of test and measurement instruments used worldwide by HVAC Contractors, Industrial Hygienists, Lab Managers, Facility Managers, Plant Engineers  and Calibration Technicians. These Alnor products are available for rapid delivery, and application assistance is always free at  (800) 576-6308. View More....

Rely On Ashcroft for the most reliable Process Pressure Gauges, Industrial Pressure Gauges, Stainless Pressure Gauges, Test Gauges,Commercial Gauges, Digital Pressure Gauges,Diaphragm Seals, Temperature gauges and switches. View More....

Automatic Timing and Controls is a manufacturer of industrial timers, industrial relays, industrial electronic controllers, sensors, indicating and tower lights, counters, and devices for instrumentation and control of automated machinery. View More....

Throughout the world, Barksdale Inc. products can be found in steel mills, on machine tools, in auto plants, in power generation and distribution facilities, in chemical processing plants, in pulp and paper mills, textile mills, amusement parks, and food processing plants, on offshore drilling rigs, in oil and natural gas fields, rescue equipment, and on many forms of transportation equipment, both on- and off-road.  Barksdale is the leading supplier of products to measure temperature, pressure, level or flow. View More....

Marsh Bellofram designs and builds several types of air pressure regulators. General purpose regulators are designed for typical industrial use and operate above atmospheric pressure. High pressure regulators are rated for inlet pressures over 1000 psi, and low pressure regulators operate at pressures below 15 – 20 psi. With dual stage regulators, the media flows through successive chambers so that a constant pressure is delivered even when the pressure regulator inlet pressure decreases. View More....

BuTech Pressure Systems is a leading manufacturer of High Pressure Valves, Tubing, Fittings and Accessories. For nearly 30 years, the Company has been a recognized leader in High Pressure Piping Components. Butech products operate in the range of 6K - 150KPSI.
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Wallace & Tiernan precision pressure gauges and calibrators are now manufactured by WIKA Instrument Corp. in Germany.  They imported into the U.S. where they are certified to NIST Standards before shipment. 
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ASCO is the worldwide leader in the design and manufacture of quality solenoid valves like ASCO 2way Solenoid Valves, ASCO 3way Solenoid Valves, ASCO 4way solenoid Valves, ASCO Steam Valves, ASCO Combustion Valves, ASCO Posiflow Valves, ASCO Switches and Sensors.
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Infrared USA is a division of Total Temperature Instrumentation, Inc. — better known as "TTI Instruments". TTI Instruments was established in 1988 as the exclusive North American distributor for Fuji Electric Systems. Initially, the company primarily sold and supported industrial temperature sensors, controllers, and recorders. In the following years, the company's offerings expanded to include Calibration Equipment & Services, Ultrasonic Flowmeters, and Infrared Temperature Measurement. In 2002, TTI Instruments established the Infrared USA division to better serve our Infrared Temperature Measurement customers. Infrared USA operates out of the same offices as TTI Instruments and is supported by the same dedicated staff. View More

Haskel International Inc. is the world's leading manufacturer of hydraulic and pneumatic driven, high pressure systems and accessories. For nearly 60 years, Haskel has manufactured a wide range of high pressure air driven liquid pumps, gas boosters, air amplifiers, systems and accessory equipment. View More....