Version :
Thick-walled anodised aluminium profile with very high rigidity. Flat and Vee-form measuring faces for perfect alignment on surfaces, pipes and edges. Flush horizontal vial with magnifying effect creates distortion-free view of the vial bubble.

Version of the advertising text :
Thick-walled anodised aluminium profile with very high rigidity. Flat and Vee-form measuring faces for perfect alignment on surfaces, pipes and edges. Flush horizontal vial with magnifying effect creates distortion-free view of the vial bubble. Error limit for measurement reversal: 0.75 mm/m.