Stanley fatmax pro box beam spirit levels 3 vial stanley 0 43 636, the stanley fatmax™ pro level has solid block acrylic vials to provide an accuracy of 0.5mm m in eight orientations'. '.strtoupper('i')n addition, every fatmax pro level comes with a lifetime accuracy warranty.the level is 5 times stronger than other stanley levels, thanks to its unique reinforced box beam construction'. '.strtoupper('t')he lightweight aluminium body and sturdy bi material handgrips make handling easy and the precision engineered, dual machined levelling surfaces ensure maximum accuracy.the vials are magnified by 20% for improved all round visibility, and the shock absorbing end caps protect the level even if it is dropped.length 900mm 36 in stanley 0 43 636 fatmax pro box beam spirit level 3 vial 90cm