Shinwa Sokutei Circular Saw Guide Dual 73345 Ruler, L-Angle Plus, 60cm, Graduations, Left-Handed,

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Use it as a guide ruler when cutting boards at right angles with an electric circular saw. For measuring dimensions. This ruler is designed specifically for cutting at right angles. The slide and stop system allows it to slide smoothly and be firmly fixed in place. It is made of stainless steel and is durable. The guide section has a combined metric scale and shaku equivalent scale, and is equipped with 303mm and 455mm marking guides.