few pico farads. Very few general purpose multimeters can measure other important aspects of capacitor status such as ESR, dissipation factor, or leakage. Conductance in siemens, which is the inverse of the resistance measured. Decibels in circuitry, rarely in sound. Duty cycle as a percentage. Frequency in hertz. Inductance in henries. Like capacitance measurement, this is usually better handled by a purpose designed inductance / capacitance meter. Temperature in degrees Celsius or Fahrenheit, with an appropriate temperature test probe, often a thermocouple. Digital multimeters may also include circuits for: Continuity tester; a buzzer sounds when a circuit's resistance is low enough (just how low is enough varies from meter to meter), so the test must be treated as inexact. Diodes (measuring forward drop of diode junctions). Transistors (measuring current gain and other parameters in some kinds of transistors) Battery checking for simple 1.5 V and 9 V batteries. This is a current-loaded measurement, which simulates in-use battery loads; normal voltage ranges draw very little current from the battery. Various sensors can be attached to (or included in) multimeters to take measurements such as: light level sound pressure level acidity/alkalinity(pH) relative humidity very small current flow (down to nanoamps with some adapters) very small resistances (down to micro ohms for some adapters) large currents – adapters are available which use inductance (AC current only) or Hall effect sensors (both AC and DC current), usually through insulated clamp jaws to avoid direct contact with high current capacity circuits which can be dangerous, to the meter and to the operator very high voltages – adapters are available which form a voltage divider with the meter's internal resistance, allowing measurement into the thousands of volts. However, very high voltages often have surprising behavior, aside from effects on the operator (perhaps fatal); high voltages which actually reach a meter's internal circuitry may internal damage parts, perhaps destroying the meter or permanently ruining its performance. Resolution Resolution and accuracy The resolution of a multimeter is the smallest part of the scale which can be shown, which is scale dependent. On some digital multimeters it can be configured, with higher resolution measurements taking longer to complete. For example, a multimeter that has a 1 mV resolution on a 10 V scale can show changes in measurements in 1 mV increments. Absolute accuracy is the error of the measurement compared to a perfect measurement. Relative accuracy is the