Scale example 2 PZC = 6 (Cedar, European sample) PZC = 7 (Cypress, Mediterranean sample) PZC = 8 (Cypress, Mediterranean sample) PZC = 9 (Beech, European sample) PZC = 11 (Obeche sample) PZC = 12 (Lime, European sample) PZC = 13 (Ash, European sample) PZC = 14 (Maple, Hard sample) PZC = 15 (Maple, Hard sample) PZC = 16 (Alder sample) PZC = 17 (Alder sample) PZC = 18 (Maple, Hard sample) PZC = 19 (Alder sample) PZC = 20 (Black Locust sample) PZC = 21 (Mahogany, Honduras sample) PZC = 23 (Iroko sample) PZC = 25 (Ovangkol sample)