Dewalt Levels 25Cm/10" Torpedo Level DWHT0-43003About this Item:Solid block vials for best durability and accuracy to 0.5mm/m. Virtually unbreakable, the vials are factory set and require no further adjustment.Magnified center vial maximizes vial readabilityABS vial casing protects the vial if level is dropped, to ensure accuracy is maintained