ECA 699
ECA 699 1997-FEB-01 Test Method for the Vsual nspecton of Quartz Crystal Resonator Blanks
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This document provides nomenclature, methods, and criteria for characterizing acceptable quartz resonator blanks. Its major objective is to aid in the evaluation of the crystal blank through visual inspection of quartz crystal resonator blanks for the purpose of contributing to the complete evaluation of a product.