I've been using it every day at work for about a month and I'm not happy with it. The legs have a very weak spring effect from the start. They often close. The set screw is not positive. We are coarse threads. There are very few similarities in size. So often I make a small mistake when measuring holes and waterways. The smaller caliber barely rubs and the larger one doesn't fit. I'm also not a fan of dual posable legs. I would prefer if they sell a model with a fixed leg. I believe they are of the same quality as Spi or Fowler. I'm really not satisfied considering the price. I should have just looked up Starrett's number on eBay. The new Starretts are about the same in poor quality so I'm not just mentioning names.