I have used this goniometer when tightening the main bolts and connecting rod "torque" bolts on my Chevrolet 5.3/LM7 engine. It has a magnetic base and attaches very well to the end of my 1/2 inch pry bar. This gauge is more accurate than the cheaper mechanical gauges you can buy at your local $20 parts store. In short, this tool is worth the money. worth it. I highly recommend it.
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