B&K Precision Corporation
Chroma ATE Inc. Hioki E.E. Corporation
IET Labs Inc. Meco Instruments Pvt. Ltd. National Instruments Corporation
Newtons4th Ltd
Rohde & Schwarz
Sanwa Electric Instrument Co. Ltd. Scientific Mes-Technik Pvt. Ltd. Siborg Systems Inc. Stanford Research Systems Inc. Teledyne FLIR LLC (Teledyne Technologies Incorporated)
etc.