The Linear Tools 51-550-012 is engineered for precise angular measurement in inspection and layout applications. It has a satin chrome dial face and vernier, with a magnifier. The protractor dial is graduated 360 x 1°, with the vernier scale reading to 5 minutes of arc and an overall accuracy of ±5 minutes. Supplied with 6”, 8”, and 12” blades made from hardened and ground alloy steel, the protractor also includes an acute angle accessory.
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