Features: Engineered with high precise aluminum alloy, this mortise caliper ensures accurate measurements while resisting deformation, outperforming traditional wooden marking gauges for woodworking and metalworking projects. Featuring lightweight portability and corrosions resistant properties, the durability marking gauge combines toolroom grade stability with effortless handling in humid workshops or outdoor environments. Professional carpentry, metal fabricators, and DIYer enthusiasts will appreciate its ergonomic grip during prolonged use in furniture assembly, model crafting, or precise machining tasks. Optimized for versatile applications across joinery workbenches, mechanical repair stations, and moisture prone construction site, its adjustable design accommodates multiple sizing requirements without secondary tools. The anodized aluminum construction maintains calibration integrity through repetitive use, while the knurled thumbwheel enables quick depth adjustments – essential for creating flawlessly joints or metal scribing operations. Specifications: Component: Aluminum alloy Size:Approx.9.5x5.9x0.5cm/3.74x2.32x0.19inch Color:Black/Red Package Includes: 1pcs Mortise Gauge note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.