This digital protractor allows you to precisely set and measure angles in degree increments. The stainless steel arms are graduated inch and metric scale for convenient and immediate linear measuring. Features a hold function, ensuring you never lose your reading and a reverse reading capability for those hard to calculate angles.Insize has the quality products made to international standards with full guarantee. Innovation by continually striving to improve and develop new products. Service and support to ensure you have trouble-free use of our products. High performance products at a good price.