This SUBURBAN AP-333 Angle Plate is the perfect tool for your next project. It can be used as a sine bar or surface plate. The ground angle plate has a width, length and height of 3 in., 3 in. and 2-3/4 in. respectively. It has an overall depth of 3". This individual angle plate comes with a parallelism accuracy of 0.0002". If you need to use this SUBURBAN Angle Plate as a sine bar, it will give you an accurate reading on all angles.