MARKING RING

PROBLEM TO BE SOLVED: To provide a marking ring which can maintain gripping force of an aerial transmission line against external stress.SOLUTION: A marking ring 100 comprises: a conductor grip part 10 to grip a conductor which is an aerial transmission line; and a marking body 20 which is suspended at a lower side of the conductor grip part 10. The conductor grip part 10 has an opening ring structure, where one edge of the opened conductor grip part 10 has a convex shape A and the other edge has a concavity shape B. Moreover, a marking body suspension hole metal fitting 15 is provided on the side of the concavity shape of the conductor grip part 10 to attach the marking body 20, and the marking body 20 comprises a marking piece 24 to show the existence of the aerial transmission line and a rod-like connection part 22 to penetrate the marking body suspension hole metal fitting 15 in the upper part of the marking piece 24.