Well, I got this for the end piece having an extension so I can measure inside depths. It's much heavier than my little plastic guy but it's all stainless and has a solid feel of good craftsmanship. Extra batteries, nice case, auto turns on when you move to measure. Has an Off-On  button. Turn knob on top to lock it in place. Roller/thumb knob. Zero button, quick settings button for inches or mm. Yep, nice unit!