Version :Shock-resistant plastic casing.Aluminium inlay on both work faces, giving exact contact surfaces for inside and outside measurement.Aluminium profiles resistant to heat and mechanical loads.Tape measure stove enamelled, with black characters. Cambered = non-buckling with sliding end hook (for inside and outside measurements). Sharp-contrast, abrasion-resistant rustproof scale.Graduations mm / mm (upper / lower edges).Viewing window scale reads in the same direction as the tape. Smallest tape measure with viewing window for inside measurements.