1、Using Methods: Take a few drops of distilled water, place them on the testing prism, and turn the zero adjusting screw to adjust the dividing line to 0% of the scale. Then wipe the testing prism for testing. 2、Sugar Content Measuring: Brix meter refractometer is designed for measuring sugar content in fruit, soybean milkhoney, maple syrup and other sugary drink. 3、Adjustable Lens: When the scale in the eyepiece is not clear, it can be adjusted by gently rotating the eyepiece. Cover plate can protect prism and make measurement more stable 4、Accurate Measurement: Clear display for intuitive data reading, fast detection, accurate measurement, convenient use. It's 0‑80% large scale range makes it be suitable in wider field. 5、Portable: This 0‑80% brix refractometer is in light weight and compact size, portable for using anywehere and anytime. 1 x Brix Refractometer1 x Straw1 x Lens Cloth1 x Screwdriver1 x Instructions1 x Plastic Box Item Type: Brix Meter RefractometerMaterial: Plastic, AluminumGross Weight: 244g / 8.6ozTest Range: 0‑80%Size: 14.5x4x4cm / 5.7x 1.6x 1.6inApplications: Sugar content measuring of fruit, soybean milk, sugary drinks