Stair Gage Fixture Attachment
A pair of these fixtures clamped to a carpenter's framing or rafter square forms a handy gage for laying out stair stringers, hip, valley, and other rafter cuts plus many other unusual cuts.
Merchant: Home Depot
A pair of these fixtures clamped to a carpenter's framing or rafter square forms a handy gage for laying out stair stringers, hip, valley, and other rafter cuts plus many other unusual cuts.