I have installed hundreds of fence posts around our property using an old post leveler that just broke after years of use. I could always check with a small torpedo level and was always up. I installed 4 rods with this Kapro 340-08D and double tested them with the same torpedo stage which I have used hundreds of times. All 4 posts were 1/4 blisters. I couldn't believe it so I checked again with the Capro and again with the Torpedo. Yes, everything is 1/4 of a bubble. Kapro 340-08D sent back.