| Job Title |
Drop Tester |
| Job Description |
Tests Cartridge Primers For Sensitivity To Impact By Dropping
Weight Onto Sample Primers From Measured Heights: Secures Primer
Or Primed Cartridge Case In Test Fixture And Positions Firing
Pin Over Primer. Raises Steel Ball In Electromagnetic Holder To
Specified Height On Calibrated Column. Presses Switch To Cut
Power From Electromagnet Which Drops Ball Onto Firing Pin In
Test Fixture To Detonate Primer. Tests Groups Of Primers From
Same Production Sample At Several Specified Drop-heights, And
Records Percentage Of Fires And Misfires At Each Height. May
Plot Test Results On Graph To Develop Primer Sensitivity Curve,
Or Apply Standardized Statistical Formulas To Estimate
Sensitivity Characteristics Of Entire Production Lot Of Primers.
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