Joseph Thanks for your inputs.
The situation here is totally diffrent from what you are thinking. I have the measure the quantity of output from only one mill in terms of number of pieces. So that I can mathematically convert it to equivalent weight. My idea is to count the piece as it comes out of the last roll before it goes to cooling area. I am not intrested much in counting the number of pieces kept in cooling area.

Regards,
Prahlad Purohit