SPEED SQUARE

摘要

A roofing shingle speed square has a substantially rectangular board shaped body with side ridges aligned perpendicular to one another along adjacent first and second side edges of the board. A plurality of grooves defined in the surface of the board in spaced apart relation. The grooves providing a cutting guide for a blade to be drawn across and to cut the shingle.

主权项

1. A cutting apparatus comprising,
an elongate board defining a support surface; a first side ridge defined along an first edge of the elongate board and extending above the support surface; a second side ridge oriented defined along a second edge of the elongate board and extending above the support surface, wherein the first side ride is oriented substantially perpendicular to the second side ridge; and a plurality of grooves defined in spaced apart relation across the support surface, the grooves aligned substantially parallel to the first side ridge and substantially perpendicular to the second side ridge.