This vintage Texas Instruments TI-35 Slimline Scientific Calculator comes with a protective case and is perfect for repair or restoration. The calculator is a classic piece of office equipment, ideal for use in business and industrial settings. It is a scientific calculator, making it perfect for solving complex equations and displaying your work. The calculator is made by Texas Instruments, a trusted brand known for producing high-quality calculators. The model is TI-35, which is known for its slimline design and ease of use.