Scientific Instruments
Founded in 1967
Scientific Instruments – over 55 years of cryogenics
Scientific Instruments, Inc. was founded in 1967 by aeronautical engineer Jack Hoey and low temperature physicist Gilbert Halverson. Coming from aerospace and academic backgrounds, they saw a market need for cryogenic temperature measurement and developed one of the first Germanium Resistance Thermometers (GRT) and supplied these devices for use on the Apollo Lunar Program.
Today, Scientific Instruments, Inc is owned and operated by founder Jack’s daughter, Leigh Ann Hoey. An ISO 9001 certified company, Scientific Instruments is involved in the design and manufacturing of cryogenic temperature sensors for laboratory, industrial and medical applications, temperature indicators and controllers, and petrochemical tank gauging systems for liquid natural gas (LNG) storage tanks.
Austin Capers
A note from our president
It is a tremendous honor to lead Scientific Instruments, a company defined by both an honorable and prestigious history. Since 1967, we have proudly supported the scientific community with precision measurement technologies that have enabled some of humanity’s most groundbreaking achievements.
Our products have contributed to milestones spanning from the Apollo lunar landings to the observations of the Hubble Space Telescope, from the Atlas & Delta launch vehicle programs and the entire era of the Space Shuttle. Beyond aerospace, our technologies have supported advances in MRI and NMR, semiconductor fabrication, proton therapy, critical infrastructure such as LNG storage tanks and today’s most ambitious pursuits in fusion energy and quantum computing.
While our legacy is something we deeply respect, our focus remains firmly on the future. Our team is united in a clear vision: to be the worldwide leader in cryogenic measurement technology through continuous innovation, engineering excellence, and the relentless pursuit of advancement.
We are proud of where we have been – and even more excited about where we are going.
Scientific Instruments Product Development Through the Years
The initial products developed and manufactured by Scientific Instruments were cryogenic temperature sensors including Germanium Resistance thermometers and Silicon Diodes. These temperature sensing devices created opportunities in the aerospace, industrial and laboratory research industries. Of particular note is the fact that SII supplied a number of Germanium Resistance thermometers that were installed into Helium and Hydrogen systems on the Apollo space craft and at the end of the 1960’s flew on lunar landing missions.
The company presently is active in six distinct product areas, although separate; these products are “synergistic” as they are technologically related to temperature and liquid level measurement and control. With one exception, all product areas supported by Scientific Instruments are related to cryogenic applications, meaning extremely low temperatures, typically in range of 0.05K to 300.0K (-459.58 F to +250.0 F).
These products include cryogenic temperature sensors, cryogenic temperature instruments (controllers/monitors), liquid natural gas- level, temperature & density gauge (LTD), aerospace temperature probes and industrial probes.
Scientific Instruments Product Certifications
Quality Policy: At Scientific Instruments we are committed to implementing processes and manufacturing high quality products that meet or exceed required regulations and customer expectations. We also commit to continual improvement of our products, processes and overall Quality Management System while complying with the requirements of ISO9001.
