A speed square is a straight edge and angle measurement tool that carpenters and framers use. Draw straight edges using a speed square with tips from a professional on home improvement in this free video.Expert: James Drew Contact: www.jnchomerepair.com Bio: James Drew is the owner and president of JNC Home Repair in Austin, TX. Drew is also an HVAC certified tech with more than two decades experience in plumbing, masonry, and carpentry. Filmmaker: Todd Green