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GA/T 1690.3-2019: Forensic sciences -- Examination methods for seal stamps -- Part 3: Characteristics marking and comparison
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| GA/T 1690.3-2019 | English | 139 |
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Forensic sciences -- Examination methods for seal stamps -- Part 3: Characteristics marking and comparison
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GA/T 1690.3-2019
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Basic data | Standard ID | GA/T 1690.3-2019 (GA/T1690.3-2019) | | Description (Translated English) | Forensic sciences -- Examination methods for seal stamps -- Part 3: Characteristics marking and comparison | | Sector / Industry | Public Security (Police) Industry Standard (Recommended) | | Classification of Chinese Standard | A92 | | Classification of International Standard | 13.310 | | Word Count Estimation | 6,614 | | Date of Issue | 2019-10-14 | | Date of Implementation | 2019-12-01 | | Issuing agency(ies) | Ministry of Public Security | GA/T 1690.3-2019: Forensic sciences -- Examination methods for seal stamps -- Part 3: Characteristics marking and comparison
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Forensic sciences - Examination methods for seal stamps - Part 3.Characteristics marking and comparison
ICS 13.310
A92
Public Safety Industry Standard of the People's Republic of China
Forensic science seal seal inspection
Part 3.Comparison of detailed features
Published on October 14,.2019
2019-12-01 Implementation
Issued by the Ministry of Public Security of the People's Republic of China
Foreword
GA/T 1690 "Forensic Science Seal Seal Test" is divided into 6 parts.
---Part 1.Microscopic inspection method;
---Part 2.Coincidence comparison method;
---Part 3.Detailed feature comparison method;
---Part 4.Measurement comparison method;
---Part 5.Splicing comparison method;
---Part 6.Line drawing comparison method.
This part is part 3 of GA/T 1690.
This section was drafted in accordance with the rules given in GB/T 1.1-2009.
This part is proposed by the Sub-Technical Committee of National Criminal Technology Standardization Technical Committee (SAC/TC179/SC10) and
Be in charge.
This section was drafted by. Tianjin Public Security Bureau, Tianjin People's Procuratorate, Physical Evidence Appraisal Center of the Ministry of Public Security, Zunyi Public Security Bureau.
The main drafters of this section. Yu Jianmin, Xu Lu, Han Xingzhou, Zhang Yazhuo, Zhao Yuanxiang, Hou Jianzhong.
Forensic science seal seal inspection
Part 3.Comparison of detailed features
1 Scope
This part of GA/T 1690 stipulates the method specifications for the inspection of seals and seals in the field of forensic science in the comparison of details and features.
This section applies to the inspection of seals and seals in the field of forensic science.
2 Equipment
Magnifying glass, microscope, graphics (image) processing software, document inspection instrument, scanner, camera, etc.
3 Inspection
3.1 Discovery and extraction of detailed features of printed text
Through direct observation or using a magnifying glass, microscope, document inspection instrument, etc., observe the whiteness, defects, wear, defects, dark notes, attachments of the printed text
(Dirty printing) clear and stable details in the printed text, and fixed and extracted by the collection equipment.
3.2 Comparison inspection
Select the details at the same position of the printed text to compare the similarities and differences.
4 Make inspection records
Record the inspection results of the comparison of detailed features in the inspection records. If necessary, you can place a comparison picture and mark the details or
Text description.
5 matters needing attention
5.1 The similarities and differences of the details should be comprehensively analyzed in combination with the material of the seal, the method of inking, the conditions of stamping, and the stamping time of the stamp.
5.2 The ratio of detail features should be performed under the same magnification.
5.3 If necessary, comprehensive inspection may be carried out in combination with other methods of seal and seal inspection.
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