The American System Primary of the above example would be 3/21.įor a Henry Classification Primary to match an American System Primary, whorls must appear in all 10 fingers (32/32) or in no fingers at all (1/1). vġ (the base value) + 16 + 4 which equals 21. The LEFT Hand has Whorl Patterns in fingers number 6 (value 16) and 8 (value 4). Looking at the fingers in the RIGHT Hand, you find a Whorl in the number 4 finger which has a value of 2. In the American System, the Primary is arrived at similarly, but the finger values are added for the Right Hand first, followed by the Left.Īmerican System of Classification Values. Together, these numbers form a Henry primary Classification of 15/1 There are no Whorls appearing in any of the odd numbered fingers, so the demominator would be: The numerator is: 1 (the base value) + 8 + 4 + 2, which equals 15. Looking at the even numbered fingers, you find Whorls in:įingers number 4 (value = 8), 6 (value = 4) and 8 (value = 2). The above example would have a Henry Classification of 15/1. Latent fingerprints are made of the sweat and oil on the skin’s surface. Then all of the values for the ODD numbered fingers where a Whorl appears are added and used as the Denominator. There are three types of fingerprints that can be found: latent, patent, and plastic. The Henry System adds up all the values in each of the EVEN numbered fingers where a Whorl appears. To demonstrate the difference, we will make up a set of fingerprint patterns.įingerprint Patterns (Example). The major differences between the American and Henry Systems are the values which are assigned to the each of the fingers and the manner in which those vaules are accrued. Fingerprint dermatoglyphic patterns in 50 patients with presumed senile dementia of the Alzheimer type (SDAT) were compared with a control group of 50. Whenever a Whorl Pattern appears in a finger, the associated value of that finger is added to the base value of 1. The numerator and denominator of the fraction are arrived at by adding values associated with each of the 10 fingers. Primary Fingerprint Classifications come in the form of a fraction, such as 1/13, 23/2, etc. Advisory Boards, Commissions and Councilsįingerprint Classification Systems Compared.Whorls have at least two deltas and a core. Whorl: 25-35 of fingerprint patterns are whorls. An arch doesn’t have any delta, lines, or cores. Gun Violence / Crime Reduction Initiatives 3 major types of fingerprints include: Arch: Only a few, that is close to 5 have this type of fingerprint.Navigation menu Division of Criminal Justice Services
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