问题：
Amps: What is the best instrument for measuring currents at high amperage rates?
答案：
Up to 10A, and a few amperes/second, in time frames of many milliseconds, a digital multimeter, such as the Keithley Model 2000 or 2001 is best. If lower currents and faster speeds are involved, the Model 428 Current Amplifier, with response time to 2 microseconds, is best.
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