I didn’t want to hack Doug’s thread on digital calipers so I started another one. I got these today. A function I never realized is when you take a measurement you can find the mm, decimal, and fraction just by pushing the same button without re-measuring. They were $42.99 marked down to $29.99 then they offer a $10. coupon so I paid $19.99 plus tax. They came with a battery installed plus two extra batteries and a tiny screwdriver to open the battery compartment. Here is the link.