Since 1988, Annapolis-based PHILTEC, Inc. has designed and built custom fiber optic displacement sensor systems for accurate, non-contact measurement in environments ranging from aerospace test stands to cryogenic liquids and ultra-high vacuum. Its engineers tailor probes, fiber cables, and signal hardware for specialized installations, with more than 70% of its products receiving custom engineering. PHILTEC’s sensors are built in the USA and sold through a global network.
Spectron SensorsSince its founding in 1947 as Spectron Glass Laboratories, Spectron Sensors has built its identity around American-made sensor engineering in Long Island, New York. The company first produced neon signs before shifting to electrolytic tilt-sensor work for Sperry Gyroscope in 1948, then developing proprietary technology for demanding aerospace, military, and industrial applications. Its staff works directly with customers’ engineers on custom sensing solutions, including equipment designed for extreme environments.HAUPPAUGE, NY
Probes Unlimited, IncFounded in 1992 in Lansdale, Pennsylvania, Probes Unlimited designs and manufactures custom OEM temperature sensors and control devices. The privately held company was acquired by Ernest DeLany in 1999 and pairs in-house engineering experience with flexible production for both low-volume builds and automated high-volume assemblies. Its service can extend from sensor design through installation, with NIST-traceable calibration available for custom precision sensors.LANSDALE, PA
Stellar TechnologyWith roots in aerospace, Stellar Technology designs, manufactures and services custom-engineered sensors from its Amherst, New York, operation. The roughly 30-year-old U.S. manufacturer works from nearly 80,000 square feet of environmentally controlled engineering, manufacturing and machining facilities, with custom applications as a particular strength. Its quality system is certified to ISO 9001:2015 and AS9100D.BLACKLICK, OH
Photonix TechnologiesWith more than 30 years of roots in Upstate New York, Photonix Technologies is a U.S. manufacturer known for durable fiber-optic testing equipment. The company serves technicians in communications and military settings, while its engineering staff also develops custom optical and electronic designs for other industries.ENDICOTT, NY