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innermost recurving ridge, the recurve is included in the ridge count only when the delta is located below a line drawn at right angles to the spike. Figures 105 and 106 are examples of this rule. If the delta is located in areas A, the recurving ridge is counted. If the delta is located in areas B, the recurving ridge is not counted. LOOP 25 ...
Print - The mark made by a finger or thumb on a surface or in a soft material such as wax or wet paint; can be patent (surface-visible), latent (surface-invisible), or plastic (3-dimensional in soft material). Ridge counter - A handheld, pointed tool used for counting the number of ridges during fingerprint analysis. Shoulder - The point of a ...
Figure 3.133 Whorl ridge tracing illustrations: (a) Top, double loop/inner trace value, (b) Bottom left, plain/outer trace value, (c) Bottom right, central pocket loop/inner trace value. b. Procedure: i. Count from the left delta to core on right hand. ii. Count from the right delta to core on left hand. c.
Case 1: Ridge count of the left thumb is 16 or less. In this case, you can use the same values of the left thumb i.e. Small (S): 1 to 11. Medium (M): 12 to 16. Large (L): 16+. Case 2: Ridge count of Left thumb is greater than 16. For this, new sets of values are assigned for the right thumb: Small (S): 1 to 17.
something called a ridge count. The ridge count is the number of lines intersected if you were to draw a line from the delta to the core plus or minus 1. Always add plus or minus 1 to the ridge count if you were to be searching for this print card based on classification or in the event you were comparing it to an NCIC Classification.
Major Classification: Ridge counts or trace values of loops and whorls on the thumbs. Designated by letters: for loops (S, L), and for whorls (I, O) 5. Final Classification: Ridge count of loop appearing in the little fingers 6. Key Classification: 1st loop count on the card excluding little finger. Extesnion to FBI Henry Classification System
Type lines are the two parallel innermost ridges that define the ridge pattern area. In Figure 5-5, the type lines are the two slightly darker ridge lines in the enlarged section. Figure 5-5. Type lines. Ridge count . Ridge count is the number of ridges that intersect a line drawn from a delta to the core.
