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This device of the Japanese company Sanwa is a pocket laser power meter, which is particularly portable and reliable in operation. The device is designed to facilitate the assessment of the power level of laser radiation when checking and maintaining equipment using this radiation. The device is calibrated for 633 nm helium-neon laser radiation and allows you to directly read the indication of the power of optical radiation in a visual spot, for example, the optical system of DVD players, etc. The Sanwa LP10 also allows you to measure other wavelengths by converting the reading using spectral sensitivity correction factor tables (typical values).