This vintage Butterfield tap drill size pocket card chart is a rare find for any collector. Made in the United States, this item showcases the quality craftsmanship of the Butterfield brand. The pocket card chart includes tap drill sizes for various screw sizes, making it a useful tool for any machinist or handyman.

With its unique design and historical significance, this vintage Butterfield tap drill size pocket card chart is sure to be a conversation starter in any collection. Despite its age, this item is in great shape and would make a great addition to any tool, hardware, or lock collection. Don't miss out on the chance to own a piece of history!