Roofus is available in two variants (‘STANDARD' and ‘PRO’) which both comprise of the same features and angle scales. ‘STANDARD' models are injection moulded from impact resistant metal replacement composite resin. ‘PRO' models are machined from solid 6061 aircraft aluminium, finished with sand blasting and a protective anodized coating. Rulers are precision machined from tough knife blade stainless steel. IMPERIAL models are fitted with a 14" blade and METRIC models are fitted with a 350mm blade.