Keithley Instruments, Inc. based in Cleveland, Ohio, USA is involved in the design, development, manufacture and marketing of electronic instruments and systems for production testing, process monitoring, product development and research.

The products and services offered by the Company include the following:

• Current/Voltage Source and Measure Products
• Low Current/High Resistance Measurement Products
• Low Voltage/Low Resistance Measurement Products
• Data Acquisition Modules/Cards
• Digital Multimeters and Data Acquisition/Switching Systems
• Fast Transient Response and High Voltage Power Supplies
• Semiconductor Parametric Test and Device Characterization
• Instrument Accessories
• Optoelectronic Test Solutions
• PCI/ISA/PCMCIA Accessories
• RF/Microwave Switching and Measurement
• IEEE-488 Communications
• Software Development
• Switching and Control Circuits

Keithley Instruments is certified to be in compliance with the ISO 14001, 1996 Environmental Management System Standard.