Machine Lumber Grading Systems

Our Machine Lumber Grading equipment for structural lumber has been the industry-standard over the last 4 decades and continues to be the predominant technology, producing more mechanically graded lumber (MSR, MGP, MSG, and MEL) than all other systems combined.

7200 HCLT - Stress Tested Lumber

PDF Version

The model 7200 HCLT in an inline Machine Stress Rating (MSR) system. In addition to a direct measurement of Modulus of Elasticity (E), Metriguard’s 7200 HCLT applies stress to each individual piece of lumber, causing breakage and elimination of very weak pieces – the only mechanical grading equipment that can make that claim.

2350 Sonic Lumber Grader

The newest Metriguard machine grading system, Model 2350, will sort lumber for stiffness using density and sonic velocity. This system is designed for a planer mill to machine grade lumber and for a sawmill to sort material for resource allocation before drying.

Metriguard’s Model 2350 is installed in a transverse lug chain making it ideal for mills with limited space. The 2350 is compatible with other visual grading and scanning systems.

312 Bending Proof Tester

PDF Version

The 312 Bending Proof Tester is used in quality control progams to verify measurements made by the 7200, the 2350 and other grading systems.