SD LEVEL PRODUCT SPECIFICATIONS : Our Heavy Duty Digital Levels are available in Six Sizes: 96" , 120" , 144" , 180" , 216" , and 240" Long. Our Aluminum Digital Levels are Heavy-Duty; the wall thickness is 1/8" thick, twice that of any other level. Our Levels weigh about 2 lbs per lineal foot. They are Dual Purpose; our Levels are equipped with a Digital Module installed and a combo set of plumb/level bubble vials recessed into the 4" Frame. Each Model has (2) Hand-Grips installed for easy lifting & heavy-duty shock-absorbing end caps. And The SlabDoctor is Powder Coated for easy clean-up.  The SlabDoctor is the worlds' longest Digital Level.