Based on our own experience this Dial Depth Gage is a great addition to our industrial and scientific measuring tools. Its sturdy construction and accuracy make it a reliable device for measuring the depth of holes and other crevices. The adjustable needle is a pro, as it allows for customization and precision... The only drawback we noticed is the small and non-illuminated dial, which can make it harder to read in low light conditions. Overall, we highly recommend this Dial Depth Gage for anyone in the dimensional measurement field..