Patent ID: 9612208
Date: 2017-04-04
CPC Classifications: G01B,G01N

Claim:
1. An apparatus for testing a stick, comprising: a tension generator fixing a stick having openings formed therein and applying tension to the stick; a first tester disposed spaced-apart from the stick and testing a surface of the stick; a light disperser disposed in an opposite side of the first tester based on the stick and reflecting light emitted from the first tester; a distance measurer disposed in an opposite direction to that of the stick based on the light disperser and determining a third distance from a bottom surface of the stick to the light disperser; and a controller determining a second distance from a starting point of a protrusion of the stick tested by the first tester to the light disperser, determining a difference between the second distance and the third distance so as to determine a height of the protrusion, and determining whether the stick is defective or not, based on the height of the protrusion.