The product is a vintage 4-inch Sun Hemmi Japan 2634 slide rule, made in Japan. It is a collectible item in the category of engineering and slide rules, featuring the renowned quality and craftsmanship of Japanese manufacturing. This miniature slide rule comes with a protective case, making it a convenient and practical addition to any collection or for on-the-go use in engineering or mathematical applications. The Sun Hemmi Japan brand is known for producing reliable and precise tools, making this slide rule a valuable piece for enthusiasts and professionals alike. Glass is cracked