A leveling crew in a case for the small contractor The Spectra Precision® Laser LL100 is a complete one man leveling crew in a case. A complete system is contained in a single hard-shelled, portable carrying case - the laser, receiver, clamp - for easy transportation, storage, and use. Automatic, self-leveling ensures fast, accurate setups. Easy, one-button operation requires minimal training. ........... Includes: LL100 transmitter, HR320 receiver with C59 rod clamp in one portable hard shelled carrying case and multi language manual.