Features:With metric and inch scales.Aluminum alloy material and anodized treatment, high hardness, rustproof, non-corrosive, permanent use.Ground and lapped for straightness and parallelism.True right angles for both inside and outside squares.Designed to be attached to boxes, frames, etc. to help with squaring during glue up.90 degree positioner is suitable for wooden jigs.Accurate calibration, easy operation, not easy to damage fragile cutting edges.This Right Angle positioner has two ex-tra slots.Specification:Material: Aluminium alloyQuantity: 1pc, 2pc,3pc,4pc(optional)Color: RedScales: 1 Side Metric and 1 Side InchAngle: 90° right angleApplication: Wood jigs fixing fixtureSurface treatment: Anodized Use: Right angle positioningItem size: 120 * 120mm / 4.7 * 4.7inThickness: 16mm / 0.6inPackage size: 202 * 202 * 22mm / 8.0 * 8.0 * 0.9inPackage weight: 160g / 5.6ouncePacking List:1 * Right Angle Positioning Ruler