Depth gauge dive watches are not only unique, they’re also useful as a backup instrument should you decide to — gasp! — actually take them diving. As always, you have a difficult choice between two ...
The new PowerDigger depth-indicator system from Leica Geosystems features a large, see-at-a-glance color display screen that provides the operator precise information about the depth and position of ...
Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...
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