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Equipment and Instrumentation
John H. Dillon Jr. “Module 07: Equipment…
Equipment and Instrumentation
John H. Dillon Jr. “Module 07: Equipment and Instrumentation.” Firearm Examiner Training, National Forensic Science Technology Center, projects.nfstc.org/firearms/module07/fir_m07.htm.
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Weight, Force, and their Measurement
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Digital Scales: strain gauges, load cell, signal amplifier, microprocessor
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Firing Facilities
Cotton Box: simple, inexpensive, and easily assembled, but takes a lot of time and is potentially hazardous (cotton and gun propellant residue
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Other Bullet Recovery Systems: wet telephone books, wet sawdust, ballistic gelatin, plastic milk jugs, blocks of ice
Indoor Ranges: require bullet trap arrangement, good ventilation, and sound and vibration mitigation strategies
Outdoor Ranges: used if need more space, greater ranges, etc. Disadvantages: weather conditions, availability, most require permission
Small Tools and Supplies
Small Tools: metal scribe, calipers, magnifying glass, magnet, clamps, etc.
Supplies: containers for standards and evidence, clay, lead and copper wire, StikkiWAX
Core Items: PPE, disinfectant, cotton swabs, detergent
Measurements, Standards, and Accuracy
Instruments measure weight, dimensions, and velocity to establish known standards
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