Another drawback is that the ScanJet 6200C's scan bed is limited to letter-size (8.5-by-11.7-inch) materials, unlike the other two corporate scanners on our chart.

CNN: Reviewing the top 10 scanners

''We locate objects on the sea bed with a side-scan sonar device which we tow along behind our salvage ship, '' she explained.

BBC: Hunting for Cuba's hidden treasure