1Using 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. 2Sugar Content Measuring: Brix meter refractometer is designed for measuring sugar content in fruit, soybean milkhoney, maple syrup and other sugary drink. 3Adjustable 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 4Accurate Measurement: Clear display for intuitive data reading, fast detection, accurate measurement, convenient use. It's 080% large scale range makes it be suitable in wider field. 5Portable: This 080% brix refractometer is in light weight and compact size, portable for using anywehere and anytime. Item Type: Brix Meter Refractometer Material: Plastic, Aluminum Gross Weight: 244g / 8.6oz Test Range: 080% Size: 14.5x4x4cm / 5.7x1.6x1.6in Applications: Sugar content measuring of fruit, soybean milk, sugary drinks 1 x Brix Refractometer 1 x Straw 1 x Lens Cloth 1 x Screwdriver 1 x Instructions 1 x Plastic Box