Alpha Servo self leveling, high performance, rugged design. The Pro Shot™ Alpha construction laser level tool is designed for concrete and general contractors, working on large commercial or municipal sites.  The Alpha laser is built amazingly tough to handle the real-world use and abuse that happens on sites with large crews. Electronic servo self leveling means you simply turn the laser on and it levels itself automatically. The Alpha also provides manual slope matching. Specifications 2000’ dia., 1000’ rad. (610m/305m) ± 10 arc sec. (± 1/16" per 100') (± 1.5mm per 30m) Servo motor • ± 5 degrees Single axis, X-axis self-leveled • 8% Normally active, can be disabled 360º • 600 or 1200rpm. selectable Yes, including high speed rotation 24 Month defects coverage Four C-cells • 115 hrs. (alkaline) Optional Ni-Mh kit • 85 hrs. Visible 670nm CDRH and IEC Class 2 To international standard IP56 -4º F to +140º F (-20º C to +60º C) Designed to withstand a 3ft (1m) drop or 5ft (1.5m) tripod knock-over on concrete Range with R7 laser receiver . Accuracy ............................ Self leveling type • Range ..... Slope matching • Range ....... Height alert ........................ Rotation coverage • speed .... Machine control compatible ... Warranty............................. Power source • Life .............. Rechargeable batts. • Life ..... Laser beam type ................. Alpha laser classification ....... Dust and water sealed .......... Operating temperature ......... Built to be jobsite tough ....... Alpha system including R7 receiver and carrying case $995.00 US list price