A ridge count plus "50" in NCIC classification indicates what type of fingerprint pattern?

In the context of fingerprint pattern classification, a ridge count combined with a number like "50" indicates a specific total for the ridge count, which is significant for identifying certain types of fingerprint patterns.

The classification system used by the National Crime Information Center (NCIC) assigns specific ridge counts to different fingerprint patterns. A ridge count refers to the number of ridges between the core of the fingerprint pattern and the delta – a triangular ridge pattern found in whorls and loops.

For a radial loop, the ridge count typically falls within a range that could include a value such as "50." The radial loop is characterized by ridges that enter from one side of the fingerprint, loop around, and exit on the same side. This differentiates it from other patterns that may have different structural characteristics and ridge counts.

A tented arch, a whorl, and an ulnar loop exhibit different formations and are identified by their unique ridge count criteria. Therefore, a "ridge count plus '50'" specifically points to the radial loop pattern, confirming its identification as a fingerprint category within the NCIC classification system.