Some double loops look more like whorls, others are more clearly two intertwined loops. Depending on which one it is, see also the associated loop or whorl characteristics. Peacock's eye (a.k.a. central pocket loop): perfectionistic, good eye for detail. It is more of a whorl than a loop, so see also whorl characteristics.
Whorls are seen in about 25-35 % of fingerprint patterns encountered. In a whorl, some of the ridges make a turn through at least one circuit. Any fingerprint pattern which contains 2 or more deltas will be a whorl pattern. There are four types of whorl patterns.
The tented arch and the arch comprise about 5% of fingerprint patterns found on the human finger tips and thumbs. The tented arch has a ‘tent pole’ thrusting up from the mound at the base in the middle of the print. See the example below.
Loops occur in about 60-70 % of fingerprint patterns encountered. One or more of the ridges enters on either side of the impression, re-curves, touches or crosses the line running from the delta to the core and terminates on or in the direction of the side where the ridge or ridges entered. Each loop pattern has is one delta and one core and has a ridge count. Radial loops are named after the ...