The device has a high rating on the market and it is deserved! Deviations from the ideal by 0.01 during a series of measurements are not significant for me personally, so I think that he fully justified his money. Of course, the installation and further replacement of batteries is either picking with a knife or buying a screwdriver . because the bolts are terribly small.
I've added some photos to help give a visual representation of my review.
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