| AMAC International Inc. | | 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 | | Bartington Instruments manufacture fluxgate magnetometers, magnetic field sensors and magnetic susceptibility systems for soils and rocks |
| Caylar Magnetic Instruments | | Caylar is a manufacturer of NMR and Hall effect gaussmeters (teslameters), magnetic field regulators in closed loop systems. |
| Custom Magnet Supplier | | Supplier of magnets, specializing in custom magnet shapes and designs. Eagerly works with inventors, companies, universities, schools, and individuals worldwide. |
| E-magnets UK | | A specialist supplier of permanent magnets, including Neodymium magnets, ferrite magnets, alnico magnets and rubber magnets. Offers free advice and technical help. |
| Elcometer Distribution | | Elcometer Distribution of surface coating test and measurement products: a full range of portable coating thickness gauges, paint meters and other coating test equipment. |
| Electronic Filters | | Real-world signals contain wanted and unwanted information. Therefore, some kind of electronic filtering technique must separate the two before processing and analysis can begin. |
| EMproto | | 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 | | 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. |
| Forcefield | | 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. |
| Gaussmeters and Hall Probes | | Hirst Magnetic Instruments Ltd. manufactures a range of portable and handheld gaussmeters for measurement of magnetic flux densities. |
| Group3 Technology Ltd. | | Precision Magnetic Field measuring instruments, and fiber optically linked Distributed Control Systems. |
| Hocking NDT Ltd. | | Company specializes in eddy current non destructive testing (NDT). An overview of NDT is provided, including theory pages on electromagnetics and practical applications. |
| Integrity Design and Research Co. | | High quality instrumentation and detectors for magnetic field AC,DC and for nuclear radiation (apha, gamma, and x-radiation) measurement. |
| Jandel Engineering | | Manufacture probes for resistivity test measurement of semiconductors, silicon wafers and thin metal films. Based in Leighton Buzzard, UK. |
| Kemo Filters | | Kemo produce a wide range of electronic signal filters, from simple filter modules to complex computer controlled multi-channel systems with gain. |
| Magmess Magnet | | Over thirty years in magnetic field measuring and testing; products include gaussmeters, fluxmeters, and measuring coils |
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