Appu's turbidity meter

[Ajil Benny]

This is a equipment made by me inorder to measure the turbity of the water this is made in a measuring jar and there will be a value corresponding to it, the point at which the marking disappear is noted and measured 

[John Cuthber]

You were beaten to it.

https://en.wikipedia.org/wiki/Secchi_disk#Secchi_depth

 but it's a good, simple, cheap way to compare turbidity