Ratio mixing chart measuring sticks. Ratio use: 2-1 paint/Primer/Clear to hardener (2 parts paint, primer, clear to 1 part hardener) 3-1 paint/Primer/Clear to hardener (3 parts paint, primer, clear to 1 part hardener) 4-1 paint/Primer/Clear to hardener (4 parts paint, primer, clear to 1 part hardener) 5-1 paint/Primer/Clear to hardener (5 parts paint, primer, clear to 1 part hardener)