A Clamp Meter combines a current clamp with the basic functions of a digital multimeter, also called DMM. Clamp the "jaw" around a conductor to measure current.
Megohmmeters, or Insulation Resistance (IR) Testers, are used to measure the resistance, integrity and safety of electrical wiring insulation
Current Sensors measure the magnetic field around an AC or DC current carrying conductor/wire and generate a proportional signal for use by a wide variety of instruments
Datacom Testing and Telecommunication Equipment covers a broad spectrum of test equipment such as IT networking, datacom cabling, and telcom networks
Environmental Testers measure environmental elements such as humidity, air flow, temperature, water quality, and more
Micro-Ohmmeters, Milliohmmeters, and Megohmmeters measure resistance in different ranges and applications
Multimeters are the instrument of choice when you need to measure voltage, current, or resistance
Panel meters display input signals from sensors measuring voltage, amperage, pressure, flow, and other variables
Electrical equipment makers use Safety Testers in design, testing, and certification to meet UL, CSA, CE, and other international standards
Extend the capabilities of your instrument or get genuine Accessories that fit your test equipment
New and Open Box Clearance items
Discontinued Products Gone but Never forgotten.
Simpson Electric was founded in 1934 by Ray Simpson. Their original claim to fame was that they manufactured the compass Charles Lindbergh used during his first solo flight across the Atlantic. Since then, they have become well known for other products such as the compact 260 volt-ohm-milliammeter which was actively used throughout World War II, the first line of shielded portable test instruments, and the first commercially practical core meter movement and two-inch wattmeter. Simpson was also instrumental in the “space race” of the 1960s; they manufactured 14 different products for the Apollo Program which were used in the spacecraft, on the ground to keep support equipment at its peak, and by aerospace contractors throughout the industry.
Today Simpson is owned by the Lac du Flambeau Band of Lake Superior Chippewa Indians. They are still based in the USA and are known today for the high quality standards that accompany all their panel and test instruments.