THERE ARE SOME INK STAINS ON THE PROTECTIVE CASE.. SEE PHOTOS

This vintage ACUMATH TRIG/LOG LOG Slide Rule No. 150 is a must-have for collectors and enthusiasts alike. Made in the United States, this slide rule comes with a leather case and manual, making it a complete package. Its unique features include trigonometric and logarithmic functions, which make it a valuable tool for mathematicians and engineers. The slide rule is categorized under Collectibles, Science & Medicine (1930-Now), and Engineering, making it a rare find for those interested in vintage items.