Looking for module to compare 2 values in sliding/percent scale

Hello,

I am looking for a module with similar idea as FiveStar and be for contributor/time of creation only, but I want to have a scale where I rate something on a scale. Kind of like a teeter tauter/see saw or a sliding bar.

I want to have a field that has neutral in center (fulcrum of teeter tauter) and far left be boy, and far right be girl. Then I set a value towards one end or other to say how much an item relates to boy or girl, the farther indicator is to the left it is a boy, farther to right girl, but unless all the way to one extreme or other still applies to both boy and girl.

I can use a percent value but would like a visual representation better. Before I start trying to develop something I wanted to see if there was something out there like this already.