
The accuracy of this product cannot be judged if you don't have other angle calibration products. I'm sorry to give a bad review, but if you rely on this product to calibrate your table saw or miter saw, your work will not be at the desired angle. According to the other three gauges I already had, the item was inferior. For verification I used the following high precision tools: a high precision digital protractor, a Machinist Engineer square and a Swanson square, which were confirmed to be a true square. The deviation is about 6 degrees.

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