This 6" wheel offers the versatility you've been looking for. Small enough to make it perfect for indoor measuring on smooth, hard surfaces and large enough to work its way outdoors for your measuring needs. The ML1812 is perfect for adjusters, appraisers, decorators, painters, and especially realtors. With its twist and lock handle, polyvinyl tread, gear driven counter with push button reset, and magnifying lens for improved readability, this versatile wheel can be your jack of all trades.