Caltech Engineering Services offers digital PCB copper thickness tester. PCB copper thickness tester t can be used to detect the thickness of copper foil of PCB copper-clad plate, PCB substrates, CCL, FPC substrates. The gauge is designed for fast, precise, non-destructive measurement of copper thickness in of printed-circuit boards (PCB) and measurement of copper on laminate. This gauge can be used for in-process control to maintain high-quality PCB production. The instrument adopts high-precision sampling circuits and micro-processing chips. It can quickly demonstrate the thickness of copper foil in digits, which can be perceived directly. The instrument can be used to detect the thickness of copper foil of PCB copper-clad plate, PCB substrates, CCL, FPC substrates. Measurement range covers 1/3 OZ to 2 OZ. It is a preferred instrument to measure the thickness of copper foil in PCB industry. The copper in a PCB is rated in ounces, and represents the thickness of 1 ounce of copper rolled out to an area of 1 square foot. For example a PCB that uses 1 oz. copper has a thickness of 1.4mils..  No need to measure or compare against sample. This instrument can be used in production, quality control departments of pcb. Caltech Model TM-09 direct measuring reading instrument with high accuracy is now popular in electronic, pcb manufacturing, copper thickness controls and has many advantage.