Test Equipment Manufacturer Index

Browse our comprehensive directory of over 400 test and measurement equipment manufacturers. From industry leaders like Keysight, Tektronix, and Fluke to specialized manufacturers, find quality used and refurbished test equipment with detailed specifications and competitive pricing.

400+ Manufacturers 35,000+ Products Trusted Since 2011

Featured Manufacturers

Popular Equipment Categories by Manufacturer

RF & Microwave: Keysight (Agilent), Rohde & Schwarz, Anritsu, Aeroflex
Oscilloscopes: Tektronix, LeCroy, Keysight, Rigol
Power Supplies: Sorensen, TDK-Lambda, Keysight, Kikusui
Spectrum Analyzers: Keysight, Rohde & Schwarz, Anritsu
Network Analyzers: Keysight, Anritsu, Rohde & Schwarz
Multimeters & DMMs: Fluke, Keysight, Keithley
Signal Generators: Keysight, Rohde & Schwarz, Anritsu
Fiber Optic Equipment: EXFO, JDSU, Anritsu

Top Test Equipment Brands We Carry

Our inventory includes equipment from the world's most trusted manufacturers. Keysight Technologies (formerly Agilent) offers the largest selection with over 8,400 products including spectrum analyzers, network analyzers, and oscilloscopes. Tektronix is renowned for oscilloscopes and signal analyzers with 1,600+ products. Fluke dominates the handheld test instrument market with nearly 1,500 multimeters, clamp meters, and thermal imagers.

For RF and microwave applications, Rohde & Schwarz provides 1,400+ products including signal generators and EMC test equipment. Anritsu specializes in fiber optic and telecommunications test equipment with 1,800+ items. Power supply specialists like Sorensen (700+ products) and TDK-Lambda (600+ products) offer reliable DC power solutions for every application.

Browse Manufacturers by Letter

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Frequently Asked Questions

What test equipment manufacturers do you carry?

We carry over 400 test equipment manufacturers including all major brands like Keysight (Agilent), Tektronix, Fluke, Rohde & Schwarz, Anritsu, LeCroy, Keithley, and many specialized manufacturers. Our inventory spans RF/microwave equipment, oscilloscopes, power supplies, spectrum analyzers, multimeters, and more.

Are used test equipment from these manufacturers reliable?

Yes. Professional test equipment from manufacturers like Keysight, Tektronix, and Rohde & Schwarz is built for decades of service. Our used equipment is tested, calibrated where applicable, and backed by warranties. Many customers choose used equipment to access premium brands at significant cost savings while maintaining measurement accuracy.

Which manufacturers are best for RF test equipment?

For RF and microwave test equipment, Keysight (Agilent), Rohde & Schwarz, and Anritsu are industry leaders. Keysight offers the broadest selection of spectrum analyzers, network analyzers, and signal generators. Rohde & Schwarz excels in high-performance signal analysis, while Anritsu specializes in telecommunications and fiber optic testing.

How do I find equipment from a specific manufacturer?

Use our alphabetical navigation above to browse manufacturers by letter, or click on any featured manufacturer to see their complete product catalog. Each manufacturer page shows all available products with specifications, pricing, and availability.

About Our Test Equipment Inventory

GSTestEquipment maintains one of the largest selections of used and refurbished test and measurement equipment from trusted manufacturers worldwide. Every piece of equipment is verified for functionality, and we provide detailed specifications to help you make informed purchasing decisions.

Whether you need benchtop instruments for your electronics lab, portable field test equipment, or automated test systems for production, our manufacturer directory helps you find the right equipment from brands known for quality and reliability. We regularly update our inventory with new arrivals from leading manufacturers.

Can't find the manufacturer or equipment you need? Contact our team for assistance. We have access to additional inventory and can help source specific test equipment from any manufacturer.