Product Code : EL-EI-16401
Overall size: 200*200*65mm
Product Weight：0.52kg
Our sturdy plastic Secchi disk handily meets industry standards.
It is 200 mm in diameter and has four quadrants, two white and two black. We
include 20 meters of 3.5mm diameter line on a Styrofoam form that will float if
dropped in the water.
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