this product is a complete waste of money and time. Thanks to my knowledge gained in practice I can say with certainty that this is not a reliable option for industrial and scientific applications .The adjustability feature is merely a gimmick as it fails to maintain accuracy. The assembly is poorly designed, and it`s tough to install. The only pro is that it appears to be sturdy, but that's not enough to justify its price. Do yourself a favor and look for an alternative..
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