Patent ID: 7509746

Claim:
An adjustable tool for assisting in installing trim pieces proximate an opening in a wall having at least one ninety-degree corner, the tool comprising: a locating block having first and second abutments, the abutments aligned relative to one another to provide a substantially ninety-degree effective angle to locate the guide block in the ninety-degree corner; a guide block slidably connected to the locating block, the guide block including a guide edge extending outward beyond the first and second abutments and extending within an oblique plane passing through a vertex of the effective angle that extends obliquely to both effective lines of the effective angle, the guide block being slidable relative to the locating block in a direction being substantially parallel to the oblique plane; and a catch connected to one of the locating block or guide block, the catch and the other one of the locating block or guide block selectively engageable to fix the locating block and guide block in a selected one of a plurality of discrete predetermined orientations, one of the catch or the other one of the locating block or guide block includes a detent region defining the discrete predetermined orientations and the other one of the catch and the other one of the locating block and guide block includes at least one corresponding protrusion configured to engage the detent region.