Industrial and Scientific professionals would love the Gauges Framing Square Holder Carabiner that makes measuring more efficient... Using this product, our team found that it's sturdy, rust-resistant, and the carabiner makes it easy to clip onto tool belts. The only downside is that it doesn't hold all framing squares which limits its universal functionality. Overall, it`s a great purchase for those looking to organize their tools while keeping them accessible on the job..