Product as advertised and works. The main problem is the LCD. The viewing angle is very narrow and the contrast is not very sharp. Therefore, you have to stand directly in front of the display and have plenty of ambient light to read it. It's great when it's right in front of you at eye level, but if you're trying to work with anything above and below you won't be able to read the display. Also, you better have a flashlight right on it to see something. I don't know how long this will stay in calibration, but recalibrate if you need accurate flat surfaces at 0 and 90 degrees.
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