This vintage Pickett N-515-T slide rule model is a true gem for collectors and enthusiasts alike. Made in the United States, this slide rule is a testament to the quality and precision of American engineering. Its unique design and functionality make it a must-have for anyone interested in vintage technology and science. With its sleek and durable construction, this slide rule is perfect for use in engineering and science applications. Its precision and accuracy are unmatched, making it a valuable addition to any collection. Whether you're a collector or an engineer, this vintage Pickett N-515-T slide rule model is sure to impress.