日本三丰Mitutoyo  
日本三丰公司由沼田惠范创立于1934年，最初是一家制造千分尺的公司，1949年获得制造卡尺的许可证，随后公司不断发展，向市场提供各种测量工具以及坐标测量机、形状测量仪、图象及光学测量仪等，如今三丰公司已成为世界著名的精密测量仪器制造和销售公司。
三丰公司总部位于日本神奈川县，公司资本3.91亿日元。目前三丰在世界各地共有43个公司（日本9个、美洲11个、欧洲14个、亚洲9个），共有从业人员4000余人（日本2177人，海外1883人，2004年6月统计）。年销售额831.41亿日元。现任董事长：沼田智秀，社长：手冢和作。
三丰公司的企业方针为“良好的环境，优秀的人才，精湛的技术”。精密测量技术是工业的基础技术，而精密测量技术需要精密测量设备的支撑。三丰公司瞄准世界市场的前沿，将5种基础技术（机械技术、电子技术、光学技术、计算机技术、控制（伺服系统）技术）融为一体，生产性能最好的精密测量设备。
三丰公司在日本有12个生产厂和3个实验室，在美国、荷兰、墨西哥、巴西、中国均建有生产厂。在日本以及8个国家及地区（美国、墨西哥、巴西、新加坡、意大利、英国、德国和中国台湾）建有三丰计量研究所，确保应用具有世界领先水平的前沿技术开发和生产高质量的精密测量产品

Founded by Yehan Numata on October 22, 1934, Mitutoyo Corporation manufactures and distributes precision measuring instruments. This company has it's base located in Kawasaki, Japan. In 1934, a research laboratory was set up by Numata in Tokyo for manufacturing mechanical micrometers. Soon, the company expanded it's product range to include instruments like indicators, callipers and other precision measurement devices.

Digital and electronic measurement devices were added to the range of products in the 1970s. By this time, a wide array of equipment included bigger, sophisticated and more sensitive measuring devices like form measuring equipment, coordinate measuring instruments and optical comparators. When the science of metrology became popular, Mitutoyo introduced such products as data collectors, output gauges and analysis software in the market. This company benefited with the arrival of computer technology and incorporated it so that measuring accuracies were brought to the sub-micron range.

Nowadays, Mitutoyo offers over 6000 computer-based metrology systems, which are integrated and capable of interconnection to develop efficient networks. This company still focuses on creating advanced measurement devices and systems with the aid of innovative technologies. Old Mitutoyo Vernier models are much sought after due to their vintage value. There is also a strong demand for Mitutoyo digital micrometer models.