A thimble apparatus for use with a rope has a thimble eye formed as a generally U-shaped shackle defining a center aperture therein with arms on opposing sides of the aperture. The thimble eye has an outer surface, a front face, and a rear face. A groove is formed within the front face of the shackle generally in the shape of a U and has a width. A rope seat is formed within the shackle beneath the groove proximal to the rear face and has a diameter larger than the width of the groove. The groove forms a passage to the rope seat from the front face along the length of the groove. A base connects to ends of the arms of the shackle closing the aperture. The base defines a first feed channel formed as a first bore through the base that connects with a first end of the rope seat and a second feed channel formed as a second bore through the base that connects with a second end of the rope seat.

A uniformly alloyed metallic member having an inertial amount of metallic alloy including at least one aperture, including an inertial amount visual indicator at least associated with the inertial amount of metallic alloy in terms of weight or mass, and including an alloy visual indicator at least associated with type of the metallic alloy.

A uniformly alloyed metallic member having an inertial amount of metallic alloy including at least one aperture, including an inertial amount visual indicator at least associated with the inertial amount of metallic alloy in terms of weight or mass, and including an alloy visual indicator at least associated with type of the metallic alloy.