Detector D-12 Reflection-Refraction

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Item Detector D-12 Reflection- Refraction
Item code
Description Refraction
Manufacturer Petty Geophysical
Circa 1942
Donor Petty Collection
Location The University of Texas at Austin
Serial number
Taxonomy GSHP020

Moving-coil-type refraction detector. This was a special-purpose detector. (1942) Reluctance-type seismic detector. Petty preferred condenser-plate detectors for both reflection and refraction use but they were too large and expensive for use in multiple groups. This detector was Petty's standard for multiple use for many years. It was simple, very sensitive, and very rugged. (1933)