Circular spirit level for recessing

Bull´s eye spirit levels GN 2278 are used to check the horizontal position of jigs, machines, devices, appliances and instruments. The housing is grooved at its lower diameter d3, making it easier to mount in place, e. g. by gluing. The spirit levels are aligned in relation to the reference or contact surface, so that the bubble is located inside the marking ring once the horizontal position of the contact surface is reached.