This is really bad. The ends of the ruler are not cut square (see photo) so they end +/- 1mm from zero with the ends cut at an angle. It looks like the rulers are cut from end to end printed pairs. It would be nice if they used a simple clip to cut them in the right place, at exactly the 90 degree angle. Instead, it seems like someone at the factory is thinking "er, that looks right" to each of them. Alternatively, they may measure carefully; but with other tools from Yipinve. you have been warned
π Enhanced Precision with Backlit Professional Manometer for Differential Ventilation
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Digital multimeter RGK DM-12
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