Made from the most important part of an antique ruler...the first part you see before you open it. The make, the model number and the city, state and country in which they are made.
The Lufkin Ruler Company, No. 1178, Saginaw, Michigan, U.S.A. Featuring inches 1, 2, 3, 4, 5 and 6!
*These are STEEL. The protective coating will eventually wear off, and any type of wax can be added back to protect the steel from rust. This will take any length of time, and depends on the activity of the wearer, but needs to be noted, since they are NOT waterproof for all of eternity. Never wear your earrings in the water.