Electronic Analytical Balances are highly sensitive measuring instruments designed to measure mass precisely and detect fine increments. There readability range being 0.1mg - 0.01mg. In order to prevent samples from being affected by air disturbances , Analytical balances have a draft shield covering the weighing area or weighing chamber. They are used in dedicated ares to avoid slightest of disturbances / vibrations or breeze which can impact the results. Analytical balances have both automatic internal motorized calibration and calibration with external weights.