Grain matching
Definition
The physical comparison of growth-ring pattern and fibre direction at a fracture or cut surface to an adjacent piece of wood. Because growth rings are continuous within a single piece of timber, the pattern at a cut is unique and can be matched to its companion piece like a puzzle edge.
Related terms
- Crossgrain
- A condition in which the wood fibres run at an angle to the long axis of the piece. In Rail 16, Koehler...
- Plane mark
- A surface trace left by a hand or machine plane, showing the arc of the blade stroke and any irregularities such as...
- Rail 16
- Koehler's designation for the left side rail of the bottom section of the Lindbergh ladder. The rail that was matched by grain,...
- Supply chain tracing
- In Koehler's investigation, the process of tracking the ladder lumber from the sawmill of origin through the distribution network to the retail...
- Tool-mark analysis (wood)
- Examination of surface marks left by cutting, planing, or shaping tools to identify the tool type, size, and individual characteristics of the...
Explained in
- The Lindbergh Kidnapping: Ladder EvidenceThe physical comparison of growth-ring pattern and fibre direction at a fracture or cut surface to an adjacent piece of wood. Because growth rings are continuo...