<prompt> Which of the following is not a function of the instrument given below ?To measure of threshold of hearing by bone conduction onlyTo find degree of handicapTo predict speech reception thresholdRecords can be kept for future reference  <response>: It is a Digital Audiometer Pure tones can be produced by audiometer used in assessment of hearing by increasing or decreasing the intensity in 5dB steps Measured thresholds of both Air conduction:Tones of 125, 250, 500, 1000, 2000, 4000 and 8000 Hz Bone conduction: 250, 500, 1000, 2000 and 4000 Hz The degree of hearing impairmentdegree of handicap is measured as the amount of intensity to be raised above the normal levels To predict speech reception threshold Records can be kept for future reference Audiogram is a form of graph in which these frequencies are chaed. FIG: Audiogram 