Johnson's most robust &accurate digital level, the "JLX" 24" programmable digital level has the accuracy &durability required for professional applications. It features pre-programmed ADA compliance, drainage &roof pitch modes that simplify measurements for the most common digital level applications, but it can also be easily customized to meet your needs. This level is easy to use - it features simple, three-button operation &its dual backlit LCD displays on the top &front put the information where you need it. Both displays automatically invert when you are taking overhead measurements. Durability is never a concern with this level - its IP65 construction provides complete protection against dust &water. It also comes with a non-marring wall grip &its crystal clear vials were designed to never fog, leak or crack. The included soft-sided case keeps your level clean &safe when not in use.