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Tide Calculator helps you predict the times of Slack Water and shows when streams are fastest in either direction.


When you buy the calculator you will be sent the files to download, print off on A4 (we recommend the thickest paper/card your printer can take), cut out the templates then stick/glue/pin the parts together.


Once assembled, simply turn the wheel so the time of High Tide lines up with the black arrow.


Please note: this option is for the Flexi Edition so you assemble the tidal information yourself. If you do not know these timings, you can order a 'First Edition' and we will research the tides for anywhere in the world, designing the First Edition compass for that place.




    This product is protected under international copyright laws and it is illegal to copy or re-sell the design. 

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