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VTG Aristo Stopwatch READ FULL DESCRIPTION 0-9 Dial 60 Second 30 Minute 6 Second:
$100.00
Nice working order. Etched on back as shown.
Dial is marked 0-9 with each number representing 6 seconds. A full rotation takes 60 seconds with minor dial in minutes up to 30. Start/stop slide mechanism.
Six second intervals often relate to historical anti-submarine pulse lengths used in modern low frequency active sonar systems
