Lightroom: missing graduated filter tool

Sorry, I don't understand.
open the histogram? I am in the Develop module with histogram showing - is that what you mean ?
I can use M or click on the graduated filter icon - neither gives me the lines associated with that filter. I was not aware I could use it with a brush, I need to set the position of filter first before using sliders but can't as I am unable to see the relevant lines that you move to place it.
open the histogram? I am in the Develop module with histogram showing - is that what you mean ?
I can use M or click on the graduated filter icon - neither gives me the lines associated with that filter. I was not aware I could use it with a brush, I need to set the position of filter first before using sliders but can't as I am unable to see the relevant lines that you move to place it.