J.W. Winco, Inc. now offers GN 2277 Bulls-Eye Levels with Mounting Flange, in metric sizes. These RoHS-compliant bull’s-eye levels are used to check the horizontal position of jigs, machines, devices, appliances and instruments. The spirit levels are aligned in relation to the reference surface so that the bubble is located inside the marking ring when the horizontal position of the contact surface is achieved. Housing is anodized aluminum with a natural color finish or black finish. Spirit level element has a glass plastic body, with a colorless-transparent filling. Casting compound is mineral-based. Two types are offered: with mounting flange for bolting to surface, or with mounting flange with collar for inserting into bore holes. Levels have a sensitivity of 30 angle minutes, with bubble able to move by 2 mm.