These vintage drill size charts are a valuable tool for those interested in metalworking, machining, or carpentry Made in the United States, these charts provides accurate information on tap drill sizes, screw thread sizes, and more It is a must-have for collectors of price guides and publications, tools, hardware and locks, and other collectibles The charts feature clear and concise information for easy reference and is in excellent condition They would make a great addition to any collection or workshop Use them for your next project or display it in your home or office  .  =)