Trimming rails

Short cross-cutting rails with a stop that clamps to the workpiece, in 250, 420 and 670 mm. Unlike a long guide rail, these carry an adjustable angle stop, so the rail registers off the edge of the timber and the cut repeats without measuring. Angles from −60° to +60° set and lock. Paired with a carpentry circular saw this becomes a mobile mitre saw for joists and beams — the tool travels to the timber, which on a roof or a floor is the only order that works.