Product Information
Set includes: 1.5", 3.5", & 5.5" rulers.

Square up a half-square triangle in less than half the time. No more ruler rock with Bloc_Loc. The patent pending channel locks onto the seam and slides to make a perfect square cut every time. All Bloc_Loc Half-Square Triangle Square Up Rulers have fine, solid lines every 1/2" which makes trimming more accurate.