Stanley Fatmax 600mm (2ft) & 1200mm (4ft) FatMax Level Set | XMS25LEVEL2Milled primary edge, provides 0. 5mm m primary edge vial accuracy Secured vial technology protects vial against drop damage for long lasting accuracy Magnified solid block plumb vials, larger plumb vial for better visibility Removable end caps, allows user accuracy and precision due to easier 90 angle corner access Continuous edge centre vial design, makes it easier to draw scribe uninterrupted lines and provides greater strength and durability Grip