Inspection tip "Hand feel"

source:KF Quality author:KFQ 2020-12-31 10:10:33

Some defects are not easily noticed with naked eyes at one arm distance, however when you touch it by hand, you will detect the problems, especially for the product surface with high glossy or completely black.

I take two examples for your better understanding. In the attached photo 1), the glass lip is not even; and in the photo 2), there is dent mark on the stem. Both defects are not obvious, but could be discovered by this "Hand feel" check.