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一、JJF1304-2011制定的背景及目的量块比较仪是检定量块的主要计量仪器,它是采用比较方法测量量块长度的计量仪器。该仪器使用范围广泛、使用量极大。量块比较仪有多种类型,其中,各种光学计、测长仪、测长机、接触式干涉仪等仪器已经制定了各自的检定规程或校准规范。但是,随着科技进步和仪器的更新换代,出现了越来越多的新仪器
A, JJF1304-2011 set the background and purpose Volume comparator is the main measuring instrument measuring instruments, which is used to measure the length of the measuring instrument measuring instruments. The instrument used in a wide range of great use. There are many types of gauge comparators, of which various optical instruments, length measuring instruments, length measuring machines, contact interferometers and other instruments have developed their own test procedures or calibration specifications. However, with the progress of science and technology and the upgrading of instruments, more and more new instruments have emerged