plain arch

plain arch

[′plān ‚ärch]
(forensic science)
A fingerprint pattern in which the ridges enter on one side of the impression and flow or tend to flow out the other side with a rise or wave in the center.
References in periodicals archive ?
Arches can be classified into plain arch and tented arch.
Q I'm considering converting a plain arch into a curved arch.
Table 1 Digital Patterns Males Females Row Total Whorl 330(33%) 245(24.5%) 575(28.75%) Ulnar Loop 155(15.5%) 130(13%) 285(14.25%) Loop 380(38%) 285(28.5%) 665(33.25%) T ented Arch 35(3.5%) 30(3.0%) 65(3.25%) Plain Arch 100(10%) 310(31.0%) 410(20.5%) Column Total 1000 1000 2000 Table 2 Ridge density Males Females 3 to 6 /25 mm 27(27%) 0(0%) 6 to 10 /25 mm 66(66%) 0(0%) 11 /25 mm 6(6%) 1(1%) 12 to 15 /25 mm 1(1%) 71(71%) 15/25mm onwards 0(0%) 28(28%) Table 3 Digital patterns Male Female Total 287.5 287.5 575 Whorl Loops Archs 475 475 950 237.5 237.5 475 Total 1000 1000 2000
Loops were the most predominant pattern (33.25%) followed by whorls (28.75%), Plain arches (20.5%), and the least were the tented arch (3.25%).