Secchi Disc, white, version M, with line

Secchi disc with a diameter of 240 mm for determining the depth of visibility and light permeability of water (called also as transparency of water and light penetration). It is made of durable, white plastic 10 mm thick, additionally equipped with a cylinder-shaped stainless steel weight (50 mm diameter) for better lowering and a high rod ended with a stainless steel eyelet to hook the line (included). The disk is made of white, sturdy plastic and stainless steel. Overall dimensions: diameter 24 cm; height 28,5 cm. Length of the line: 10 m.