Stanley roofing square
Stanley Roofing Squares are designed for all roofing calculations and layout of stairs.
Tempered steel, buffed and with a clear protective finish.
There are 15 tables for rafter cuts, roofing pitches and rises etc.
Size. 600 x 400mm. (24in x 16in).
Graduated every 8ths, figured in inches on one side with metric graduations on the reverse.