SMOKING  THINGS TO KNOW BEFORE YOU BUY

Ringelmann scale. A measure of smoke coloration. Invented by Professor Maximilian Ringelmann in Paris in 1888, it is basically a card with squares of black, white and shades of gray and that is held up and the comparative grayness on the smoke judged.At just one time the freshly moist Perique was also chewed, but it is now not marketed for this int