Test Equipment
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Test and measurement equipment, with safety first. Use meters and probes rated for the job (CAT II, III or IV for the circuit you are measuring), test your tester on a known live source, and follow OSHA and NFPA 70E for lockout and arc flash PPE. For measurements that matter, calibration should be traceable to NIST through an accredited lab. Makers and stores below are commercial.
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Links last checked Oct 19, 2026.
| Text Only | Markdown | whois | history | safety | sitesearch | Google AI Mode | Grok | Bing AI | |
|---|---|---|---|---|---|---|---|---|
| Electrical safety and calibration (start here) | ||||||||
 a2la.org - A2LA: find an accredited (ISO/IEC 17025) calibration lab |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 nfpa.org - NFPA 70E: electrical safety in the workplace, arc flash and PPE |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 nist.gov - NIST calibration services for precision instruments |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
| nist.gov (traceability) - NIST policy on metrological traceability, an unbroken chain of calibrations |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 osha.gov - OSHA: electrical safety, lockout and working near live circuits |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
| Test and measurement makers | ||||||||
 anritsu.com - Anritsu: RF and communications test |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 bkprecision.com - B and K Precision: bench test equipment |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 digilent.com - Digilent: USB test instruments for students and labs |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 keysight.com - Keysight (agilent.com test gear on the old page; may block automated checks) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 ni.com - NI (Emerson): test and data acquisition |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 picotech.com - Pico Technology: PC oscilloscopes and data loggers |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 rigolna.com - RIGOL: oscilloscopes, generators and power supplies |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 rohde-schwarz.com - Rohde and Schwarz: RF and oscilloscope test equipment |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 siglentna.com - SIGLENT: oscilloscopes and spectrum analyzers |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 tek.com - Tektronix: oscilloscopes and test equipment |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 viavisolutions.com - VIAVI: network and fiber test (jdsu.com on the old page) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 yokogawa.com - Yokogawa: power analyzers and measurement |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
| Meters, testers and hand-held tools | ||||||||
 flir.com - FLIR: thermal cameras (may block automated checks) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 fluke.com - Fluke: multimeters, clamp meters and calibration (on the old page) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 hioki.com - Hioki: electrical test and measurement |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 kleintools.com - Klein Tools: electrical testers and tools |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 megger.com - Megger: insulation testers (may block automated checks) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
| Distributors, calibration labs and used gear | ||||||||
 amazon.com - Amazon: CAT III rated multimeters (on the old page) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 digikey.com - DigiKey (may block automated checks) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 ebay.com - eBay: used test equipment, check calibration date (may block checks) (on the old page) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 mouser.com - Mouser Electronics (may block automated checks) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 newark.com - Newark: electronics and test equipment distributor |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 transcat.com - Transcat: test equipment and accredited calibration |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
 wisecomponents.com - Wise Components: electronic components (on the old page) |
whois | history | safety | search | AI Mode | Grok | Bing AI | |
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