We have been using the ZIPLEVEL for 20 years. Great tool for checking levelness of foundation slabs. It is a quick and easy tool to use, much faster and simpler than any other device.

– Skys Sykes, Skys Property Inspection Consultants, California, USA

Hands down one of the best tools ever made and that I've ever bought. It's virtually idiot proof. My wife who has rarely used a hammer or shovel was able to understand ZIPLEVEL on her own and assist me with grading. Thanks for a great tool...brilliant!

– Jon Oswell II, Oswell Design Build, California, USA