Geophone / Hydrophone Testers
Geophone Field Tester - HGT-1F
HGT-1F is a Standalone Portable Field Tester with imbedded computer.
Geophone Laboratory Tester - HGT-1L
HGT-1L is a Laboratory Tester used in conjunction with a computer.
HGT - Hydrophone Test Option
HGT Hydrophone Test Option is an independent system designed for accurate hydrophone testing, measuring both electrical and acoustic properties.