美国狄夫斯高 DeFelsko 
DeFelsko Corporation, a U.S. manufacturer of Coating Thickness Gages and Inspection Instruments, has been providing Simple, Durable, and Accurate gages since 1966.
自1966年始专业生产测厚仪等检测仪器，品牌有Positector、Positect等，产品操作简单、耐用、精确度高。