What is the best angle for Type 14 fingerprints?

• A. Thirty-degree angle
• B. Forty-five-degree angle
• C. Sixty-degree angle
• D. Ninety-degree angle

Answer: (D)

Getting fingerprint impressions right hinges on the angle of contact with the surface. For Type 14 fingerprints, approaching the surface perpendicularly—at about a 90-degree angle—yields the clearest, most accurate imprint. When the finger is pressed or rolled at a smaller angle, ridge details can be foreshortened or smeared, making minutiae such as bifurcations and endings harder to see and potentially distorting the pattern. A perpendicular contact minimizes perspective distortion and preserves the true shape and spacing of the ridges across the entire impression, which is why this angle is preferred for these prints.