Measurements of various sizes of pipes can be made with wide measuring face.This product does not slide down on the slant due to special coating ● Three gradients and the horizontal can be measured in one vial. ● It is easy to read with lens.● Curing treatment of aluminum alloy extrusion material● Coating of anodized aluminum clear and anodized aluminum polyester powder● Measurements of 3 gradients (1/50, 1/100, and 1/200) and the horizontal can be made.● 3-gradient acrylic horizontal vial with lens● 4-line acrylic vertical vialSensitivity 0.15mm/m=0.0086°Precision ±0.45mm/m=within±0.0258°Sensitivity 0.50mm/m=0.0286°Precision ±1.50mm/m=within±0.0859°H61 X W36