AICHOSE X0017LUQIX Portable Optical Refractometer The item you see in the photos is the exact item that you will receive. The Aichose Portable Optical Refractometer is portable, easy, quick, and no battery use. It is more accurate than the traditional hydrometers and affordable than a digital meter. Perfect tool for young or adult, home or professional use. It features high-quality optics with smooth focusing. Its main body is made of aluminum alloy. The internal optical lens with high refractive index make up the precision optical system. The instrument is resistant to abrasion and corrosion, can be used to measure the general corrosive liquid. We take our reputation seriously, we buy and sell online, so we understand the value of trust! Thanks for looking at our listing and supporting our small family business! SHELF: 13(bin 2) AP