While the name of M-Power’s Tri-Scribe may be from one of those we-like-hyphens-too-much marketing sessions, this seems to be a pretty clever little tool. I stumbled across it while browsing drafting implements and it’s an innovation I wish I’d had on hand in the past.
Instead of using a try-square to mark several points at a given distance from an edge and connecting them with a ruler, the Tri-Scribe removes the middleman. Screw the scribe onto your square, pull it along the edge, and you have measurement and marking rolled into one step. Clever. The manufacturer’s photos show it with a pencil attached, but it looks like a carbide scribe for metalwork is compatible, too. There’s also a blade attachment for slicing strips of veneer, cardboard, paper, and probably thin plastics. M-Power claims it’s the ideal tool for scoring sheetrock, which really got my attention.
The Tri-Square is made in England, so quality probably isn’t something to worry about. The $22 asking price (with blade adapter another $6) from Hartville Tool isn’t bad, considering the time this might save. Anything to make drywall work less painful.