Show at a glance both direction and rate of tidal streams at hourly intervals by careful and accurate use of graded arrows. Display mean neap and spring tidal rates in tenths of a knot. Include diagram to assist you to calculate the tidal stream rates for your required day.
Orders placed after 3PM Friday 2nd May will be processed and packed over the Bank Holiday weekend, but will not be collected by the courier until Tuesday 6th May
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