[Accurate Measuring Tool]: This angle measuring tool helps you accurately and conveniently measure the angles (internal and external) and transfer them to the material being processed, it is especially useful for assembly work or furniture item making. The measuring tool can be used to draw lines that are parallel to the edge of the fabric.  [Handy Woodworking Tool]:Transfer the obtained measurement results to the processed material.  [ Easy to Store]: This tool features foldable design for convenient storage in your toolbox, workbench, pocket, or toolbelt.  [ Essential for Woodworker]: The angle measuring tool is sis simpler and more accurate than a standard protractor. It is perfect for crown molding, casing, baseboard, trim, vinyl plank & laminate flooring, decks and more. It is a valuable tool for finish carpentry and DIY home improvement projects.  [Easy to Use]: Just a few steps, you can easily move angle finder tool accurately at the corner and align the arm. We lock the angle bar to fix the size.    The operation is very simple, just a few steps:  1. Put the angle bar exactly to the corner, align the arms.  2. We lock the angle bar lever, thus fixing the dimension.  3. Transfer the obtained measurement to the processed material.  size:31 x 3 x 2cm  Material:plastic  colour:green    Package Contents:  1 x Angle measuring ruler    Only the above package content, other products are not included.  Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.