Original helmet ear dimension question

[tazdevilal]

Hello all.<br>

I'm well on way with making my own helmet sculpt/mold but one thing that keeps annoying me is my helmet detail parts. <br>

One specific detail I'm hoping someone can hel me with is the dimensions of the ears on the helmet.<br>

I was specifically looking for measurements of the <br>

1. Main lower circle area, depth and radius<br>

2. The upper circle area, depth and radius<br>

3. The depth and width roughly of the stock.<br><br>

If anyone can help me out with these it would be amazing. <br>

Thanks for any and all help