For DC Milliamp or Millivolt measurements only; accuracy to BS 89 Class index 1.5. Taut band suspension with single linear scale, 63 mm long with centre zero, is housed on projection type transparent plastic case mounted on an inclined base at a convenient reading angle. With pair of colour coded 4 mm socket terminals & zero adjustment. Momentary overload 1000%; can withstand momentary connection across the terminals of a 12 V accumulator.