OMI Cowley originally made this product (Red Version). Kingsview bought the instruments of the S.O.L group when they went into recievership & OMI Cowley was part of that group.
The roofmaster has been designed to simplify the work of the carpenter on site. With this tool the skilled craftsmen should have no problem in constructing traditional roofs of complex design.
The concept of the roofmaster is built on one main factor, the pitch angle of the roof to be constructed. This angle will be specified by the architect or designer and shown on the relevant drawings. When this figure has been determined, it is the only number required to set the tool for all roof members.
The graduated arc is designated to each particular roof member. The required cutting angles for any given member is obtained by setting the adjustable arm to the pitch angle number on the selected arc.
The Roofmaster has been designed to cover all standard roof shapes based on rectangular or square plans. Pitch angles and rafter lengths for roofs pitched at 16° and 75° have been covered. For a more detail explanation of how to use the roofmaster a pdf of the user manual can be found here RoofmasterManual