Fischerscope X-Ray XDLM-PCB measures coating thickness on pcb using X-ray fluorescence method; has programmable stage with X and Y travels of 10 and 5.8 in.; and accommodates oversized boards. Modular Model MMS SR accepts wide array of probes, which use electrical resistance and eddy current methods. Portable Cu-Scope CMP1A uses eddy current method to measure coating thickness inside through-holes.