Sealey VS0274 Pocket Brake Fluid Tester Integrated circuitry checks moisture content of fluid by measuring the electrical resistance and comparing it with acceptable limits. Easy calibration check using water. Five LED read-out. Just switch on and insert probe for immediate result. Works on all grades of brake fluid. Powered by 1 x AAA battery (supplied). VS0274 Features Integrated circuitry checks moisture content of fluid by measuring the electrical resistance and comparing it with acceptable limits Easy calibration check using water Five LED read-out Just switch on and insert probe for immediate result Works on all grades of brake fluid Powered by 1 x AAA battery (supplied) VS0274 Specification Model No VS0274 Brand: Sealey Nett Weight: 0.05kg What is included: 1 x Sealey VS0274 Pocket Brake Fluid Tester