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With the Bahco 3046-REF refractometer, you can test critical automotive fluids quickly and accurately in the workshop. This optical tool allows you to inspect coolant and screenwash freezing points, check battery electrolyte specific gravity, and verify AdBlue urea concentration with ease. The adjustable focusing eyepiece with rubber eyecup delivers a sharp view of the internal scale using standard ambient light, completely eliminating the need for batteries. Featuring a rugged build with a steel head, glass prism, and rubber grip along its 200 mm length, this refractometer is built to provide dependable service during routine maintenance and winter preparation checks.