An apparatus for marking pipes at a plurality of cutting angles comprises a marking plate of adjustable length. The marking plate comprises a plurality of apertures and a plurality indicators. Each aperture is of a different size and configured to receive a pipe of a certain diameter through the marking plate. Each aperture is defined by a first half-circle side and a second half-circle side and the distance between the first half-circle side and the second half-circle side of each aperture varies according to the adjusted length of the marking plate. Also, the distance between the first half-circle side and the second half-circle side of each aperture corresponds to an angle of a pipe received through the marking plate. Indicators specify a diameter of a pipe received through the adjustable marking plate and the angle of the pipe with respect to the adjustable marking plate.