Seems completely plausible to me, and elegant to boot. To minimize design change, the product name could be the alignment check.
{You being too high/low} and {the angle of the numbers/check being wrong} are two ways of saying the exact same thing when ignoring the world beyond you and it, like using a handheld mirror.
{You being too high/low} and {the angle of the numbers/check being wrong} are two ways of saying the exact same thing when ignoring the world beyond you and it, like using a handheld mirror.