Check the listing for details. Solid Brass Plumb Bob. Condition: Used, Made in Unknown. Listed at 15.11 USD. Box14. Crafted for precision and durability, the Lufkin 590G Plumb Bob is an essential tool for any construction or DIY project. Made from high-quality solid brass, it offers longevity and resistance to wear. The 21.8 oz. weight ensures a steady descent for accurate plumbing measurements. Designed with the user in mind, this plumb bob features a model number 590G and is part of the renowned Lufkin brand, known for their reliable and professional-grade tools. Ideal for both home and garden use, as well as in the workshop, this tool is a versatile addition to your measuring and layout tools.