A weapon mount tactical light trigger includes a mount for Picatinny rail to clamp to a shotgun or rifle, a light mount to clamp a tactical light, and a principle mount to joint both mounts with a trigger base fixed at the back. Accordingly, early tube leak detection and isolation is highly desirable. 1 to 30 parts by weight of a hydrogen bond monomer, and 0. In the state in which the fixed substrate and the movable substrate are bonded to each other with the bonding film, the first electrode formed on the first electrode surface and the second electrode formed on the second electrode surface have contact with each other. The cup has a plurality of spaced-apart stepped increments and indicia for indicating capacities and content levels of the cup.