The AISITESY Portable Manual Lensmeter is an essential optical instrument for optometrists, opticians, and eyewear enthusiasts. This compact and lightweight focimeter allows you to accurately measure the power of lenses, making it indispensable for prescribing corrective eyeglasses or evaluating existing ones. Its portability and versatile power options (110V AC or 2 dry batteries) ensure you can use it virtually anywhere, from optical shops and professional centers to your own home. With a convenient storage box included, this manual lensometer is the perfect tool for on-the-go lens testing and analysis. Whether you're a professional or a hobbyist, the AISITESY Portable Manual Lensmeter offers precision, flexibility, and affordability in one compact package.