Scale example 3 PZC = 7 (Olive sample) PZC = 8 (Yew sample) PZC = 9 (Ipe sample) PZC = 10 (Pear sample) PZC = 11 (Pear sample) PZC = 12 (Bocote sample) PZC = 13 (Rosewood, Madagascar sample) PZC = 14 (Rosewood, Santos sample) PZC = 15 (Mansonia sample) PZC = 16 (Black Locust sample) PZC = 17 (Etimoe sample) PZC = 18 (Walnut, Black sample) PZC = 19 (Alder, Red sample) PZC = 20 (Walnut, African sample) PZC = 22 (Iroko sample) PZC = 23 (Mansonia sample) PZC = 24 (Makore sample) PZC = 25 (Mahogany, Honduras sample) PZC = 27 (Koa sample) PZC = 28 (Etimoe sample) PZC = 29 (Koa sample)