Manufactures advanced magnets, cryostats and SRF cavities. The company provides low cost equipment and a variety of services to scientific community of accelerators, superconductivity and cryogenics.

Bartington Instruments manufacture fluxgate magnetometers, magnetic field sensors and magnetic susceptibility systems for soils and rocks

Caylar is a manufacturer of NMR and Hall effect gaussmeters (teslameters), magnetic field regulators in closed loop systems.

Supplier of magnets, specializing in custom magnet shapes and designs. Eagerly works with inventors, companies, universities, schools, and individuals worldwide.

Elcometer® Distribution of surface coating test and measurement products: a full range of portable coating thickness gauges, paint meters and other coating test equipment.

Professional engineering services in Ontario, Canada. Numerical electromagnetics prototypes and analysis of antennas, scatterers and coupled structures in support of system design, troubleshooting and compliance assessment.

Erickson Instruments specializes in the design and manufacture of extremely sensitive power meters, directional couplers, waveguide transitions and other microwave components for millimeter and submillimeter wave applications.

Really slick magnetic field sensors. And the electronics to interface them.

Powerful Neodymium and Ceramic magnets and other products, sold new and surplus and at wholesale prices. Site also has a FAQ for magnets and electromagnetism, and magnetic demonstration images.

Hirst Magnetic Instruments Ltd. manufactures a range of portable and handheld gaussmeters for measurement of magnetic flux densities.

Precision Magnetic Field measuring instruments, and fiber optically linked Distributed Control Systems.

Company based in Singapore specializes in magnetization, magnetic calibration and measurement of magnets and magnetic systems.

Company specializes in eddy current non destructive testing (NDT). An overview of NDT is provided, including theory pages on electromagnetics and practical applications.

High quality instrumentation and detectors for magnetic field AC,DC and for nuclear radiation (apha, gamma, and x-radiation) measurement.

Manufacture probes for resistivity test measurement of semiconductors, silicon wafers and thin metal films. Based in Leighton Buzzard, UK.