Throwback Thursday #TBT: A snapshot of one of the world's first commercial GPR systems available. This system was designed for use in a van and was built with aircraft parts, an oscilloscope, magnetic tape, and a thermal printer. #gssigpr #gssi #gprpic.twitter.com/V9tQBbFt8x

Throwback Thursday #TBT: A snapshot of one of the world's first commercial GPR systems available. This system was designed for use in a van and was built with aircraft parts, an oscilloscope, magnetic tape, and a thermal printer. #gssigpr #gssi #gpr pic.twitter.com/V9tQBbFt8x

source https://twitter.com/GSSI_GPR/status/1233025363917393921