The Olympus A 10x 0.25 lens is a high-quality microscope objective designed for use in various scientific disciplines such as immunology, hematology, and microbiology. Made by Olympus in Japan, this lens has a magnification power of 10x, making it ideal for observing small details in biological samples. With a sturdy construction and precise engineering, this lens is a reliable and essential accessory for any laboratory microscope setup.