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PZC Chatometry

A standard system to measure wood chatoyance

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    • Woodworker’s Guide to Chatoyance
    • Woodworker’s Guide to Chatoyance – Compact Edition

Hemlock

tsuga canadensis, Pinaceae, Gymnospermae (Softwood)

reference picture – see below for more pictures

Chatoyance was measured by the chatometry.com team using the PZC method. The statistics for this specific timber are hereby summarized to provide an evaluation of data robustness:
Number of sources for samples: 5
Number of individual trees analyzed: 6
Number of specimens: 16
Number of measurements: 51
Max PZC read (of all measurements): 19.8
Min PZC read (of all measurements): 6.3
Max PZC average on one log: 18.1
Min PZC average on one log: 7.0
PZC Average of all logs: 11.6

Species: tsuga canadensis
Family: Pinaceae
Clade: Gymnospermae
Description: A medium-sized, conical evergreen tree with short, flat, dark green needles, each having two white bands underneath. It produces small, pendant, ovoid cones and has furrowed, reddish-brown bark.

Pictures – each from a different individual tree:

Log 1 (from [Source 53]) – PZC = 9.4
Log 2 (T. Heterophylla from [Source 58]) – PZC = 14.0
Log 3 (from [Source 58]) – PZC = 7.4
Log 4 (Tsuga Spp. from [Source 27]) – PZC = 8.7
Log 5 (Tsuga Spp. from Seralvo) – PZC = 12.5
Log 6 (T. Heterophylla from [Source 42]) – PZC = 18.7

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