Aqua Sluice Gill System

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Find your shoe size

Step 1
Measure your foot length by placing a ruler flat on the floor straight alongside the inside of your foot from your heel to your toes.
Step 2
Place an object with a flat edge straight across your toes with the edge touching the tip of your longest toe. Take the measurement from the ruler where the flat edge crosses (see image on right side). This is your foot length measurement.