I bought this dial indicator 2 years ago because I knew I would need it one day. This POS magnetic base is very weak. I then started assembling it to measure my camera's rise. I found the holes to attach the dial indicator were too small. So I drilled through to increase the diameter so I could attach an indicator. It worked fine but only after I broke the sliding handle trying to tighten the clamp because it kept turning because the sliding yolk was at its limit. I finally got everything assembled and when I try to set the dial gauge myself it falls apart.