由于工业的发达和加工精度的提高,对于传统机械量具的精度低、功能少、效率低等缺点,早就有了改革的要求;从而出现了带表卡尺和带机械计数器的千分尺等产品。但这些改进都是纯机械的,无论在性能上和精度上都有一定的局限性。随着电子技术的飞速发展,在1978年前后,国外市埸上相继出现了数字显示的电子高度规、电子卡尺、电子千分尺和电子千分表等电子量具。这些电子量具的出现,使沿用了大半个世纪的通用量具进入了一个崭新的发展阶段。在短短的几年时间里,据现有资料的不完全统计,国外生产电子卡尺的已有瑞 Due to the advancement of industry and the improvement of processing accuracy, the traditional mechanical measuring tools have the disadvantages of low accuracy, low functionality, and low efficiency, and have long required reforms; thus, products such as micrometers with gauges and micrometers with mechanical counters have emerged. However, these improvements are purely mechanical and have certain limitations in terms of performance and accuracy. With the rapid development of electronic technology, around 1978, digital display electronic height gauges, electronic calipers, electronic micrometers and electronic dial gauges and other electronic measuring devices appeared in foreign cities. The emergence of these electronic scales has enabled the adoption of more than half a century of universal measuring tools to enter a new stage of development. In a short period of several years, according to the incomplete statistics of available data, there are many foreign countries that produce electronic calipers.