Sealey-Refractometer-Antifreeze-Battery-Fluid-Screenwash-Sealey-VS005-p-Accurately-measures-the-strength-of-battery-fluid-screenwash-&-antifreeze-by-measuring-the-refractive-index-of-light-passing-through-the-mixture-Suitable-for-synthetic-antifreeze-mixtures-including-long-life-OAT-Organic-Acid-Technology-&-G13-Temperature-corrected-prism-ensures-accuracy-Eyepiece-with-adjustable-focus-Supplied-with-pipette-&-storage-case-p-Sealey-VS005-Refractometer-Antifreeze-Battery-Fluid-