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These instruments have brass cases with super durable, tarnish-free coating and QuickFix fitting system (see explanation below). Case diameter 7″, depth 1.5″. Quartz clock movements use one AA battery.
Make sure this fitsby entering your model number.
TARNISH-FREE – does not require polishing
Provides an at-a-glance indication of the tidal state
Diameter 18 cm
See below for more technical information
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