The Stanley 1-42-134 FatMax I Beam Level is a heavy-duty level with three vials.

It has solid block vials for best durability and accuracy to ±0.5mm/m with the lightweight aluminium frame having a thicker and taller cross section for 3 times the strength. It has a profiled top for improved precision measuring pipe work and shock resistant over-molded end caps for durability.

Length : 120 cm (48 in).
Vials : 3.