Central District serves American milum610 hole copper thickness Brand: milum models: mm610 milum Chinese distributor eddy current measuring PCB through-hole copper film thickness. Uniquely designed user-friendly interface, enabling a glance easy to get started. Measuring range: 0.04 ~ 4mil (1 ~ 102um) error: ± 1% (based on standard sheets) Resolution: 1 to 3 (fixed) PCB smallest aperture limit 35mil (0.9mm) PCB minimum thickness limit 30mi (0.75mm ) Memory capacity: 15,000 readings pen size :( length) 130mm / (width) 70mm / (height) 30mm Weight: 210 g (without protective cover) Battery: one 9V battery attached AC adapter Battery life: can Charging reused more than a decade, Ben Blue Technology has been serving the PCB manufacturers, metal plating, connectors, LCD, research institutions, universities, quality inspection center, semiconductor, microelectronics, optoelectronics, optical communications and other fields. We provide high quality products and the best customer service have been the highest award in the future, we will continue to meet customer expectations, requirements and needs. Sales Manager: Miss students, 136 Linger fifty-five 1959 (Ben Blue Technology)