
Keithley Instruments - Measurement Instrumentation
The company, founded in 1946 by Joseph F. Keithley in a Cleveland, Ohio, workshop, designs, develops, manufactures and markets complex electronic instruments and systems geared to the specialized needs of electronics manufacturers for high-performance production testing, process monitoring, product development and research.
Keithley Instruments's major product lines include Test & Measurement products such as electrometers, voltmeters, signal generators, data acquisition, and production and benchtop parameteric testers and analyzers.

"Branom Instrument Company was founded on January 1, 1947 when the young accountant, Ray H. Branom and his bride Vera Lee decided to take their life's savings and instead of purchasing the coveted automobile, purchased a 1/2 interest in a small industrial instrument company that dabbled in war surplus and process instruments...."

Motech - Test and Measurement Instruments 
Motech Industries Incorporated, founded in 1981 and formerly known as Meter International Corp. is a leading Taiwanese manufacturer specializing in high end test and measurement instruments.
ADSL Testers, Transmission Line Testers, Power Analyzers/Clamp Meters, LCR Meters, Power Supplies, Function Generators, Radio Frequency Training System, DC Electronic Load.

Bruker - Analytical Intruments
IR, NIR, Raman, NMR, EPR, MRI, TOF MS, XRD and XRF Spectroscopy.
"Bruker entered the field of FT-IR spectroscopy in 1974. The early instruments set new standards in research FT-IR with evacuable optics, high resolution and automatic range change."

Davtron - Multi-functional Chronometers
Clocks and multi-functional chronometers are designed to operate under the most stringent operating conditions.
Davtron Inc. -- M303 Digital Temperature Gauge - The digital O.A.T. replaces one of the most difficult instruments to read in the cockpit. Small and lightweight, 