This carabiner is perfect for industrial and scientific measurements .After trying this product, I found it to be a convenient and reliable holder for my gauges and framing square. The carabiner is sturdy and durable allowing me to easily attach my measuring tools and carry them around with me on the job site. However, the carabiner clip can be a little difficult to open at times. Overall, this product is a great addition to my tool kit and I would recommend it to anyone in the dimensional measurement field..