Derek PATER: Inventor of the Roofing Protractor & Stair Square

Tell us about the products you invented with a brief explanation:Stair SquareAdjustable roofing boat, later called the Roofing ProtractorChalkline ProtractorTilt LevelHow/Why did you start inventing. What set you off? How...

The rest of the content is for members only. Almost 200 stories with new stories added regularly. Sign up NOW (includes updates and offers)
Join Now