Sealey-Pocket-Brake-Fluid-Tester-Sealey-VS0272-p-Electrolytic-tester-Integrated-circuitry-checks-moisture-content-of-fluid-by-measuring-the-electrical-resistance-&-comparing-it-with-acceptable-limits-Easy-calibration-check-using-water-Three-LED-read-out-Just-switch-on-&-insert-probe-for-immediate-result-Red-LED-warns-when-battery-is-low-&-needs-replacing-Powered-by-one-AAA-battery-supplied-p-div-table-tr-td-Model-No-td-td-VS0272-td-tr-tr-td-Nett-Weight-td-td-0-0