| Sypris Test & Measurement | | Provider of on-site and mobile calibration services, test and evaluation services and electronic products under the F.W. Bell name including magnetic measurement instruments, current sensors and hall generators. |
| Tantec USA | | Manufacturer of surface treatment and analysis equipment and static electricity control equipment. |
| Tectra Plasma Sources | | Provides the Tectra Plasma Source, a multi-purpose source producing either atoms or ions and finds uses in a range of HV and UHV applications. |
| The Rembar Company | | Provides refractory metals and services to fabricate refractory metals. |
| UHV Design | | Manufacturer or vacuum components for molecular beam epitaxy (MBE), UHV sputtering, vacuum thin films and other UHV vacuum deposition components. |
| Vacutec | | Produces hemispherical energy analysers, electron, X ray, ion sources, and sample transfer. Includes list and description of products. |
| Vatell Corporation | | Produces a line of HFM heat flux microsensors and circular foil heat flux gages. |
| Vorg Electronics | | Manufacturer of electronic transformers for halogen lamps, photomultiplier tube bases, cables, electronic transformers, PMT bases, PMT Arrays, transformers, and custom built electronics |
| Voss Scientific | | Provides data acquisition and analysis, PC-based satellite telemetry, high-power microwave (HPM) sources, and computational electromagnetic products. |
| Walker LDJ Scientific, Inc. | | Manufacturer of magnetic measurement and analysis equipment. In addition, the company manufactures power supplies, laboratory electromagnets, and helmholtz coils. |
| WITec GmbH | | Manufacturer of equipment for scientific and industrial applications focused on new solutions for Optical and Scanning Probe Microscopy. |
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