I just got this in the 1/2 inch drive. Needed to replace my old one cause it would give very different readings from time to time. I have used the spring bar for years but it requires you to take your eyes off to see the scale, and that scale is getting harder to see. Clicker is simple and safe for me and my 2 handed approach. One on the shaft and one on the handle. So I look for length in the handle. It was on sale, and works well.