Static Avoider

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Item Static Avoider Used In Blaster
Item code
Description Refraction
Manufacturer Petty Geophysical
Circa 1928
Donor Petty Collection
Location The University of Texas at Austin
Serial number
Taxonomy GSHP033

Cocked before shot, set off by contact in bottom of blasting unit. Re-cocked and sprung once or twice more in long refraction shots. Time between each successive contact is different but constant for each time is used. Saved many shots from being lost by static.