Grid technologies are becoming more and more mature in recent years. In contrast to this trend, the resource measurement landscape in Grids looks rather dismal. As part of ChinaGrid SuperVision project, a Flexible Measurement Architecture (FleMA) for ChinaGrid is presented. In FleMA, business logic at application level is separated from the primary measurement issues at resource level to well adapt to various grid applications of ChinaGrid. A multi-level structure is exploited to generate compound metrics from raw measurements. FleMA also features open WSRF-compliant services and “plugin” measurement pattern, making it possible to achieve and deploy advanced functions synchronously on top of the unique measurement substrate.