Accurate Instrument Repair utilizes the 5520A which builds on the 5500A’s capabilities, extending its workload coverage even further. Its improved accuracy, expanded ranges, and capability for 5 1/2 and 6 1/2 digit multimeter calibration, can cover virtually all your high-performance workload, including: Handheld and bench multimeter calibration (analog and digital) up to 6 1/2 digits
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