Both the aneroid and digital types of sphygmomanometers, used universally to measure blood pressure, have their advantages and disadvantages. Any slackness in maintenance of aneroid type can lead to inaccurate readings. The digital types are easier to use but the movement during the measurement can give erroneous results. Navdeep Dhingra et al discuss the comparative strengths and weaknesses in use of the two kinds of blood pressure devices.