Inspection Square

The Blue Spruce Inspection Square is designed for woodworkers who demand precision, strength, and clarity in every layout and measuring task. Its solid 1/8" thick stainless steel core provides unmatched durability and mass, giving you a tool that won’t flex or wear over time. Machined from 416 stainless steel with a black nitride finish, the blade is pinned to the core with stainless dowels, creating a reliable reference surface that is individually tested to be accurate within 0.001" over the length of the blade. The beveled edges enhance visibility, allowing you to clearly see whether your material aligns with the blade, while also offering a solid guide for your pencil during layout work without forcing awkward angles. This thoughtful design ensures misalignments are instantly apparent, making your setup and inspections faster and more precise. Measuring 6" long, 1-1/8" wide, and 1/8" thick, the stainless steel blade combines perfectly with the stock, which measures 3-3/4" long and