The second sub secondary division is a rarely used extension for classifying fingerprints in the Henry system. This classification is generally used when a fingerprint class becomes too large for an effective small searching group. So, the very first aim of this extension is to simplify and speed up the identification process.
Later, in this post, you will get to know how to calculate the classification values. I also add two practice worksheets, try them out.
Rules for Second Sub Secondary Classification
- Numerator: Right Index, middle, and ring finger
- Denominator: Left Index, middle and ring finger
- Position: placed above the values of sub secondary classification
- Patterns: Loops
- Values: Ridge Count
Numerical Values For Second Sub Secondary Classification
Values of this classification extension are majorly given in terms of capital letters ‘S’, ‘M’, and ‘L’. Following is the table for numerical values associated with this classification for loops.
| Values | Index | Middle | Ring |
| Small (S) | 1 to 5 | 1 to 8 | 1 to 10 |
| Medium (M) | 6 to 12 | 9 to 14 | 11 to 18 |
| Large (L) | 13 or more | 15 or more | 19 or more |
How to Calculate Second Sub Secondary Classification?
Following is the 10-digit card. You can check the dedicated post on how to fill and what are the rules for filling a 10-digit card (coming soon).
Step 1: Evaluate Value for All 6 Henry Classification
I created a dedicated article on how you calculate the value of all 6 Henry classification systems.
| Key | Major | Primary | Secondary | SubSecondary | Final |
| 15 | M | 1 | U | OOO | 16 |
| M | 1 | U | OOO |
Step 2: Finding Values for Second Sub Secondary Classification
Right Hand Loop Counts
- Index= 14= L
- Middle= 16= L
- Ring= 19= L
Left Hand Loop Counts
- Index= 14= L
- Middle= 14= M
- Ring= 16= M
Step 3: Representation in Henry Classification line
This is how the second sub secondary value is represented in the henry classification system.
Practice Worksheet Set #1
Step 1: Evaluate the value of all 6 other Henry classification system
| Key | Major | Primary | Secondary | SubSecondary | Final |
| 15 | S | 1 | U | OOO | 16 |
| L | 1 | U | OOO |
Step 2: Finding Values of Second sub secondary classification value
Right Hand Loop Counts
- Index= 15= L
- Middle= 16= L
- Ring= 17= M
Left Hand Loop Counts
- Index= 14= L
- Middle= 14= M
- Ring= 15= M
Step 3: Representation in Henry Classification line
| LLM/LMM (2nd subsecondary) | |||||
| Key | Major | Primary | Secondary | SubSecondary | Final |
| 15 | S | 1 | U | OOO | 16 |
| L | 1 | U | OOO |
Practice Worksheet Set #2
Step 1: Evaluate the value of all 6 other Henry classification system
| Key | Major | Primary | Secondary | SubSecondary | Final |
| 9 | S | 1 | R | OII | 12 |
| S | 1 | U | IOI |
Step 2: Finding Values of Second sub secondary classification value
Right Hand Loop Counts
- Index= 11= M
- Middle= 10= M
- Ring= 12= M
Left Hand Loop Counts
- Index= 9= M
- Middle= 12= M
- Ring= 12= M
Step 3: Representation in Henry Classification line
| MMM/MMM (2nd subsecondary) | |||||
| Key | Major | Primary | Secondary | SubSecondary | Final |
| 9 | S | 1 | R | OII | 12 |
| S | 1 | U | IOI |
Also Read:
- Extensions of Henry Fingerprint System: WCDX & Special Loops
- Primary Classification of Fingerprint: Rules, Procedure And Worksheet
- Secondary Classification of Fingerprints With Small Letter Grouping
- Major Classification of Fingerprint: Rules, Procedure And Worksheet
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