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521A and 521C Electronic Counter

First Catalog <year>
Last Catalog <year>
Count Rate 120kHz

The 521-series counter was the first portable and moderately-priced model. Compared to the 521A, the 521C adds an additional display digit, and adds a 10-second gate time. The 521C also includes the 521A-59B crystal-controlled time base as a standard feature.


521c_counter.txt · Last modified: 2022/01/01 17:43 by saipan59

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