Janka Scale by Jana L | Mar 2, 2022 | Glossary of Terms, Glossary of Terms -J, Uncategorized | 0 comments A reference scale used to rate the hardness of a wood species. The hardness indicates the ability to resist wear, denting, and surface scratches. (Red oak has a Janka Scale rating of 1260 lbs/sq.) Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.