This ruler will be a great New Year gift orbirthday gift especially for someone loves DIY. The ruler's accuratemeasurements will save you from spending tons of money on wasted material andpaying a professional. ?Specification?:?Color: BLACK?Measurement: 5 inch/120mm x 6 side?Material: 5mm Aluminum Alloy?Measurement Accuracy: 1mm?Measurement System: inches ¢imeters?Style: Molding angle finder?Subject Matter: Measuring & LayoutTools?Intended Use: Marking Lumber, Angles forPaver Bricks, Spacing and Gauging ?How does it work??1.Loosen screws.2.Pull arms apart, Glide it to form desiredangle.3.Tighten screws and stencil your markings.4.Loosen:(turn knobs right)Tighten:(turnknobs left) ?Package Includes?:?1x 6-sided Angle Measuring Tool?1x Storage Bag?1x builders pencil ?1x Packing box ?TIPS?:?Do not pull the template tool's limbs bybrute force; Loose down the screw when you need a flexible angle.?This multi-angle measuring ruler can bedisassemble into pieces, so that you can choose the direction of the bilateralscales with free choice.